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# Unit Converter with commonly used Units

## Common converting units for Acceleration, Area, Density, Energy, Energy per unit mass, Force, Heat flow rate, Heat flux, Heat generation per unit volume and many more.

Unit symbols are given in [brackets]

### How to Convert between Units?

You can convert between units by using cross-multiplication .

#### Example - How many meter water column is 2000 Pa ?

From the Pa line in the pressure section in this page 1 Pa = 1.020x10-4 m H2O .  A cross-multiplication for the conversion can be expressed as:

x / (2000 Pa) = (1.020x10-4 m H2O) / (1 Pa)

or

x = (2000 Pa) (1.020x10-4 m H2O) / (1 Pa)

= 0.204 m H2O

#### Example - How many square feet is is 132 square miles ?

From the first line in the area section in this page 1076.39 sq ft = 3.86102x10 -5 sq mi. A cross-multiplication for the conversion can be expressed as:

x / (132 sq mi) = ( 1076.39 sq ft ) / ( 3.86102x10 -5 sq mi )

or

x = (132 sq mi) ( 1076.39 sq ft ) / ( 3.86102x10 -5 sq mi )

= 3679946750 sq ft

### Cross-Multiplication Calculator

The default values are from the first example above.

x / = /

Unit symbols are given in [brackets]

### Acceleration

foot/second2[ft/s2], metre/second2[m/s2],  galileo = gal = centimeter/second2[Gal] = [cm/s2], inch/second2[in/s2], standard gravity [g0 ], kilometer per hour/second [kph/s], miles per hour/second [mph/s]

• 1 m/s2= 3.28084 ft/s2= 100 cm/s2= 39.37 inch/s2
• 1 ft/s2= 0.3048 m/s2= 30.48 cm/s2= 30.48 Gal
• 1 g0 = 9.80665 m/s2= 32.17405 ft/s2 = 386.1 in/s2= 35 kph/s = 22 mph/s

### Angle

arc minute = minute of arc [arcmin], arc second = second of arc [arcs], circle = circumference [CC]=[CIRC]=[circum] = revolution [rev] = turn [tr], degree [°]=[deg], gradian [grad]=gon [ g ]= [gon], milliarcsecond [mas], quadrant [quadrant], radian [rad], sign [sign],

• 1 arcmin = 60 arcs = 1°/60 = 0.016667 ° = 0.018519 gon = 0.00004630 rev = 0.00029089 rad
• 1 arcs = 1 arcmin/60 = 0.016667 arcmin = 1°/3600  = 0.27778 x10-3 ° = 0.3086 x10-3 gon = 4.848x10-6 rad = 0.772 x10-6 rev
• 1 circum = 1 rev = 1 tr = 2π rad = 6.28319 rad = 360° = 400 g = 12 signs = 21600 arcmin
• 1 ° = 1 deg = 60 arcmin = 3600 arcs = 1.11111 gon = 1 rev/360 = 0.002778 rev = 1 sign/30 = 0.03333 sign = 1 quadrant/90 = 0.011111 quadrant
• 1 grad = 1 gon = 1 g = 1 rev/400 = 0.0025 rev = 0.9 ° = 54 arcmin
• 1 quadrant = 90° = 100 gon = 3 sign = 1 rev/4 = 0.25 rev = 5400 arcmin = 1.570796 rad
• 1 rad (planar angle) = 1 circum/2π = 0.159155 circum = 0.15915 rev = 57.29578 ° =  57.29578 deg = 63.662 g = 63.662 gon = 3437.75 arcmin = 0.63662 quadrant  = 206265 arcs
• 1 rev = 1 tr = 1 circum = 2π rad = 6.28319 rad = 360° = 400 g = 12 signs = 21600 arcmin
• 1 sign = 30° = 1800 arcmin = 33.333 gon = 0.3333 quadrant = 0.523599 rad =0.083333 rev

Solid angle [Ω]

• 1 hemisphere = 6.28319 sr = 20626.52 deg2= 0.4999992042 Ω
• 1 deg2= (π/180)2sr = 3.0462 x10-4 sr = 0.30462 msr
• 1 Ω = 2.000003183 hemisphere = 12.5664 sr = 41253.11457 deg2
• 1 sr = (180/π)2deg2= 3282.8 deg2= 0.1591 hemispheres

### Area

acre [ac], are [a], arpent [arpent], barn [b], centiare [ca], circular inch [circ in], circular mil [cmil], hectare[ha], kanal [kanal], marla [marla], rood [ro], section [section], square centimeter [cm2], square foot [sq ft]=[ft2], square inch [sq in]= [in2], square kilometer [km2], square metre [m2], square mile = section [sq mi]= [mi2], square mil=square thou [sq mil]=[mil2]=[th2],  square millimeter [mm2],  square yard [sc yd]=[yd2],  square rod=pole=perch [sq rd]=[rd2], township, yardland

• Area Unit Converter
• 1 a = 0.024711 ac (Int) = 1076.39 sq ft = 100 m2= 3.86102x10 -5 sq mi = 119.599 sq yd
• 1 ac = 1 sq mi/640 = 0.404686 ha = 4046.86 m2= 43560.174 sc ft (Int) = 43560 sc ft (US Survey) = 4840 sc yd = 40.46873 a
• 1 arpent = about 0.8448 ac = 3439.1 m2= 36800 ft2= 4088.9 yd2
• 1 b = 1x10 -24 cm2= 1x10-28 m2= 1.55x10-19 th2
• 1 ca = 0.01 a = 10.764 sq ft = 1550 sq in = 1 m2= 1.19599 sq yd
• 1 circ in = 0.7854 in2= 506.71 mm2= 5.067 cm2
• 1 cmil = 1x10-6 circ in = 0.7854 mil2= 5.06707x10-6 cm2= 7.85398x10 -7 sq in = 0.000507 mm2
• 1 cm2= 10-4 m2= 100 mm2= 0.155 in2= 0.1974 circ in
• 1 ft2= 144 in2= 1 yd2/9  = 0.1111 yd2= 0.0929 m2= 3.587x10-8 mi2
• 1 ha = 100 a = 10000 m2= 1x10 8 cm2= 2.471 ac = 107639.1 sq ft =  0.00386 sq mi = 395.367 sq rd
• 1 in2= 1 ft2/144 = 6.944x10-3 ft2= 1x106 th2= 645.2 mm2= 6.452 cm2= 6.452x10-4 m2= 7.716x10-4 yd2= 2.491x10 -10 mi2
• 1 kanal (Imperial) = 1 ac/8  = 20 marla = 650 yd2= 5400 ft2= 505.857 m2
• 1 km2= 102ha2= 106 m2= 10 10 cm2= 10 12 mm2
• 1 m2= 1550 in2= 10.764 ft2= 1.1968 yd2= 3.861x10 -7 mi2
• 1 marla (Imperial=Pakistani=Indian, big) = 1 rd2= 1 ac/160 = 0.00625 ac = 1 kanal/20 = 0.05 kanal = 30.25 yd2= 25.2929 m2= 272.25 ft2= 1.211 marla (Indian)
• 1 marla (Indian = Pakistani, small) = 25 yd2= 225 ft2= 20.903 m2= 0.826 marla (Pakistani)
• 1 mi2= 1 section = 2.590x106 m2= 0.4015x10 10 in2= 2.788x107 ft2= 3.098x106 yd2=640 ac
• 1 mil2= 1 th2= 1x10-6 in2= 1.2732 cmil = 0.0006452 mm2
• 1 mm2= 0.01 cm2 = 1x10-6 m2= 0.00155 in2= 1550 th2
• 1 rd2= 1 marla Pakistani = 1 sq perch = 30¼ sq yd = 25.2928 m2= 1/160 ac
• 1 ro = 1 ac/4 = 1011.5 m2= 40 sq rd = 40 sq perches
• 1 section = 1 sq mi = 2.59 106 m2= 2.59 km2= 259 ha = 3.0976 106 sq yd = 640 ac
• 1 th2= 1 mil2= 1x10-6 in2= 1.2732 cmil = 0.0006452 mm2
• 1 township = 36 sq mi = 23040 ac = 36 section = 9.3239 107 m2= 9324 ha = 93.24 km2
• 1 yardland = ~30 ac = ~1.2x105 m2
• 1 yd2= 9 ft2= 1296 in2= 0.3228x10-6 mi2= 0.8361 m2

#### Japan

• 1 ho-ri = 15.42 km2 = 5.9637 sq mi
• 1 jo = 0.5 tsubo = 1.65289 m2= 17.7916 ft2
• 1 se = 30 tsubo = 60 jo = 99.17 m2= 1067.5 ft2
• 1 tsubo = 1 bu = 1 se/30 = 3.306 m2= 35.5832 ft2

#### Russia

• 1 kwadr. archin = 0.5058 m2= 5.44439 ft2
• 1 kwadr. saschen = 4.5522 m2= 48.9995 ft2
• 1 dessjatine = 10925 m2= 2.6963 ac
• 1 kwadr. werst = 1.138 km2= 281.206 ac

### Area Moment of Inertia

• 1 cm4 = 10-8 m4 = 104 mm4
• 1 in4 = 4.16x105 mm4 = 41.6 cm4

### Capacitance

• 1 F = 1000 mF = 106 μF = 109 nF

### Catalytic Activity

• 1 kat = 1 mol/s = 106 μmol/s = 3600 mol/h

### Conductance

abmho [abmho] = absiemens [abS] = gigasiemens [GS], picosiemens [pS], siemens [S] = mho [mho], statmho [statmho]

• 1 abmho = 1 abS = 1 GS = 1000 megamho = 1 x109 mho = 1 x109 S = 8.98755 x10 20 statmho
• 1 pS = 1x10-12 S
• 1 S = 1 mho = 1 x10-9 GS
• 1 statmho = 1.112650 pS = 1.112650 x10-12 S = 1.112650 x10-12 mho

### Current

abampere [aA] = biot [biot], ampere [A], coulomb/second [C/s], coulomb (international)/second [C(Int)/s], faraday (chemical)/second [F(chem)/s], microampere [μA], milliampere [mA], statampere [statA],

• 1 abA = 1 biot = 10 A = 1.03638x10-4 F(chem)/s = 2.99792x10 10 statA = 10.00165 C(Int)/s
• 1 A = 0.1 abA = 1 C/s = 1.000165 A (Int) = 1.000165 C(Int)/sec = 1.03638x10 -5 F(chem)/s = 1x106 μA = 1000 mA = 2.99792x109 statA
• 1 A(Int) = 0.99985 A
• 1 biot = 1 abA = 10 A = 1.03638x10-4 F(chem)/s = 2.99792x10 10 statA = 10.00165 C(Int)/s
• 1 C(Int)/s = 0. 999835 C/s = 0.999835 A
• 1 C/s = 1.000165 C(Int)/s = 1 A = 1.03638x10 -5 F(chem)/s = 2.99792x109 statA
• 1 F(chem)/s = 96489.984 A
• 1 μA = 1 x10-6 A
• 1 mA = 1 x10-3 A
• 1 statA = 3.336 x10 -10 A

### Data Rate

• 1 baud = 1 bps = 0.125 bytes/s

### Density

kilogram/cubic metre [kg/m3 ] = gram/liter [g/l], kilogram/liter [kg/l] = gram/cubic centimetre [g/cm3 ]= ton(metric)/cubic metre [t/m3 ], once/gallon(US liquid) [oz/gal(US liq)] pound/cubic inch [lb/in3 ], pound/cubic foot [lb/ft3 ], pound/gallon(UK) [lb/gal(UK)], pound/gallon(US liquid) [lb/gal(US liq)], slug/cubic foot [sl/ft3 ], ton(short)/cubic yard [ton(short)/yd3 ], ton(long)/cubic yard [yd3 ]

• Density Water = 1000 kg/m3 = 62.43 lb/ft3 = 8.35 lb/gal(US liq) = 10.02 lb/gal(UK) = 1.941 sl/ft3
• 1 g/cm3 = 1 kg/l = 1000 kg/m3 = 62.428 lb/ft3 = 0.03613 lb/in3 = 1.9403 sl/ft3 = 10.0224 lb/gal(UK) = 8.3454 lb/gal(US liq) = 0.5780 oz/in3 = 0.7525 ton(long)/yr3
• 1 g/l = 1 kg/m3 = 0.001 kg/l = 0.000001 kg/cm3 = 0.001 g/cm3 = 0.99885 oz/ft3 = 0.0005780 oz/in3 = 0.16036 oz/gal(UK) = 0.1335 oz/gal(US liq) = 0.06243 lb/ft3 = 3.6127x10-5 lb/in3 = 1.6856 lb/yd3 = 0.010022 lb/gal(UK) = 0.0083454 lb/gal(US liq) = 0.0007525 ton(long)/yd3 = 0.0008428 ton(short)/yd3
• 1 kg/l = 1 g/cm3 = 1000 kg/m3 = 62.428 lb/ft3 = 0.03613 lb/in3 = 1.9403 sl/ft3 = 8.3454 lb/gal(US liq) = 0.5780 oz/in3 = 0.7525 ton(long)/yr3
• 1 kg/m3 = 1 g/l = 0.001 kg/l = 0.000001 kg/cm3 = 0.001 g/cm3 = 0.99885 oz/ft3 = 0.0005780 oz/in3 = 0.16036 oz/gal(UK) = 0.1335 oz/gal(US liq) = 0.06243 lb/ft3 = 0.00194 sl/ft3 = 3.6127x10-5 lb/in3 = 1.6856 lb/yd3 = 0.010022 lb/gal(UK) = 0.008345 lb/gal(US liq) = 0.0007525 ton(long)/yd3 = 0.0008428 ton(short)/yd3
• 1 lb/ft3 = 27 lb/yd3 = 0.009259 oz/in3 = 0.0005787 lb/in3 = 16.01845 kg/m3 = 0.01602 g/cm3 = 0.1605 lb/gal(UK) = 0.1349 lb/gal(US liq) = 2.5687 oz/gal(UK) = 2.1389 oz/gal(US liq) = 0.01205 ton(long)/yd3 = 0.0135 ton(short)/yd3
• 1 lb/gal(UK) = 0.8327 lb/gal(US liq) = 16 oz/gal(UK) = 13.323 oz/gal(US liq) = 168.179 lb/yd3 = 6.2288 lb/ft3 = 0.003605 lb/in3 = 0.05767 oz/in3 = 99.7764 kg/m3 = 0.09977 g/cm3 = 0.07508 ton(long)/yd3 = 0.08409 ton(short)/yd3
• 1 lb/gal(US liq) = 1.2009 lb/gal(UK) = 19.215 oz/gal(UK) = 16 oz/gal(US liq) = 201.97 lb/yd3 = 7.4805 lb/ft3 = 0.004329 lb/in3 = 0.06926 oz/in3 = 119.826 kg/m3 = 0.1198 g/cm3 = 0.09017 ton(long)/yd3 = 0.1010 ton(short)/yd3
• 1 lb/in3 = 1728 lb/ft3 = 46656 lb/yd3 = 16 oz/in3 = 27680 kg/m3 = 27.680 g/cm3 = 277.419 lb/gal(UK) = 231 lb/gal(US liq) =4438.7 oz/gal(UK) = 3696 oz/gal(US liq) = 20.8286 ton(long)/yd3 = 23.3280 ton(short)/yd3
• 1 oz/gal(UK) =  0.8327 oz/gal(US liq) = 6.2360 kg/m3 = 6.2288 oz/ft3 = 0.3893 lb/ft3 = 10.5112 lb/yd3
• 1 oz/gal(US liq) = 1.2009 oz/gal(UK) = 7.4892 kg/m3 = 7.4805 oz/ft3 = 0.4675 lb/ft3 = 12.6234 lb/yd3
• 1 slugs /ft3 = 515.3788 kg/m3 = 514.7848 oz/ft3 = 0.2979 oz/in3 = 32.1741 lb/ft3 = 82.645 oz/gal(UK) = 68.817 oz/gal(US liq)
• 1 ton(long)/yd3 = 1.12 ton(short)/yd3 = 1328.94 kg/m3 = 0.7682 oz/in3 = 82.963 lb/ft3 = 2240 lb/yd3 = 2.5786 sl/ft3 = 13.319 lb/gal(UK) = 11.0905 lb/gal(US liq)
• 1 ton(short)/yd3 = 0.8929 ton(long)/yd3 = 1186.55 kg/m3 = 0.6859 oz/in3 = 74.074 lb/ft3 = 2000 lb/yd3 = 2.3023 sl/ft3 = 11.8921 lb/gal(UK) = 9.9023 lb/gal(US liq)

### Electric Charge

abcoulomb [aC], ampere hour [Ah], ampere second [As], coloumb [C], coulomb international [C(Int)], electrostatic unit of charge [esu], faraday (chemical)[F(chem)]

• 1 aC = 0.00278 Ah = 10 C = 6.24151x10 19 esu = 1.03632x10-4 F(chem) = 2.99792x10 10 statcoulomb
• 1 Ah = 360 aC = 3600 C = 3600 As = 0.03731 F(chem)
• 1 As = 1 C = 0.00001036 F(chem) = 0.00027778 Ah
• 1 C = 1 As = 0.1 aC = 1.00015002 C(Int)  = 0.000278 Ah = 1.0360x10 -5 F(chem) = 2.9979x109 statcoulomb = 6.24151x1018 esu
• 1 F(chem) = 26.8 Ah = 96485.3 C

### Electromotive Force, Voltage Difference

abvolt [abV] = abampere . abohm [abA . abΩ], microvolt [μV], millivolt [mV], statvolt [statV] = erg/electrostatic unit of charge [erg/esu], volt [V] = joule/coulomb [J/C],

• 1 abV = 0.01 μV = 1x10 -5 mV = 1x10-8 V
• 1 μV = 100 abV = 1x10-3 mV = 1x10-6 V
• 1 mV = 1x105 abV = 1000 μV = 1x10-3 V
• 1 statV = 1 erg/esu = 299.792458 V
• 1 V = 1 J/C = 1x10 8 abV = 1x106 μV = 1000 mV = 0.00333564 statV

### Energy, Heat, Work

Barrels of oil equivalent [bboe], Billion barrels of oil equivalent [BBOE], british thermal unit [Btu] = [BTU], calorie [cal] = International Table calorie [ITcal], standard cubic foot of natural gas [scf NG], kilocalorie [kcal], dyne centimeter [dyn cm] = erg [erg], electron volt [eV], foot pound force [ft lbf] = pound-force-foot [lbf ft], foot poundal [ft pdl], gram force metre [gf m], gram force centimetre [gf cm], kilogram-force metre [kgf m] = kilopond metre [kpm], horsepower hour [hp h], inch-ounce force [in ozf], inch-pound force [in lbf], joule [J], kilojoule[kJ], liter-atmosphere [l atm], newtonmeter [Nm], kilonewtonmeter [kNm], quad [quad], therm [thm], watt hour [Wh],  kilowatt hour [kWh], watt second [Ws],

• One cal (IT) (International Table) was defined by the Fifth International Conference on the Properties of Steam to be exactly 4.1868 J
• 1 bboe = 1.000349x10-9 BBOE = 5.8006x106 Btu(IT) = 5800.6 scf NG = 6.12x109 J
• 1 BBOE = 0.999650850x109 bboe = 5.798615x10 15 Btu(IT) = 5.798615x10 12 scf NG = 6.1178632x1018 J
• 1 Btu(IT) = 1.00053 Btu(ISO) = 0.9992289 Btu(mean) = 1.00067 Btu(thermochemical) = 1055.06 J = 1055.06 Ws = 108.258 kpm = 1.08258x107 gf-cm = 2.93072x10-4 kWh = 251.996 cal(IT)= 0.252 kcal(IT) = 778.194 ft lbf = 1.05506x10 10 erg= 0.29307 Wh = 0.000393 hp h = 10.4126 l atm = 0.1724x10-6 bboe = 0.001 scf NG
• 1 Btu(ISO) = 0.999473 Btu(IT) = 0.998702 Btu(mean) = 1.00142 Btu(thermochemical) = 1054.5 J
• 1 Btu(mean) = 1.0007717 Btu(IT) = 1.012992 Btu(ISO) = 1.001442 Btu(thermochemical) = 1055.87 J
• 1 Btu(thermochemical) = 0.999327 Btu(IT) = 0.999856 Btu(ISO) = 0.998560 Btu(mean) = 1054.35 J
• 1 cal(IT) = 4.1868 J = 1.163x10-6 kWh = 37.056 in lbf
• 1 cal(thermocemical) = 4.184 J
• 1 kcal(IT) = 4186.8 J = 426.9 kpm = 1.163x10-3 kWh = 3.088 ft lbf = 3.9683 Btu = 1000 cal(IT) =
• 1 dyn cm = 1.00 erg = 1x10 -7 J
• 1 eV = 1.602x10-19 J
• 1 erg = 1 dyn cm = 1 g cm2/s2= 10 -7 J = 6.2415x10 11 eV
• 1 ft lbf = 1.3558 J = 0.1383 kpm = 3.766x10 -7 kWh = 3.238x10-4 kcal = 1.285x10-3 Btu(IT)
• 1 ft pdl = 0.03108 ft lbf = 2.63x1018 eV = 0.042140 J = 0.010065 cal = 5.96752 in ozf
• 1 gf cm = 0.00001 kgf-m = 0.01389 in ozf = 0.00009807 Nm
• 1 hp h = 2.6846x106 J = 0.7457 kWh
• 1 in ozf = 0.005208 ft lbf = 72.008 gf cm = 0.007062 Nm = 70616.6 dyn cm
• 1 in lbf = 0.026986 cal(IT) = 0.11298 J = 0.107089x10-3 Btu(IT) = 0.31385x10-9kWh
• 1 J = 1 kg m2/s2= 1 Ws = 1 Nm = 0.1020 kpm = 2.778x10 -7 kWh = 2.390x10-4 kcal(thermochemical) = 0.7376 ft lbf = 9.478x10-4 Btu
• 1 kJ = 1 kNm = 1kWs = 0.000278 kWh = 103 J = 0.947813 Btu = 737.6 ft lbf = 0.23884 kcal
• 1 kpm = 1 kgf m = 9.80665 J = 2.724x10-6 kWh = 2.342x10-3 kcal = 7.233 ft lbf = 9.295x10-3 Btu
• 1 kWh = 3.6x106 J = 3600 kJ = 3.671x105 kpm = 859.9 kcal = 2.656x106 ft lbf = 3.412x103 Btu
• 1 Q = 1018 Btu = 1.055x1021 J
• 1 quad = 10 15 Btu = 1.055x1018 J
• 1 scf NG (60°F, 14.7 psi/1.01 bar) = 1000 Btu (IT)
• 1 thm(e.c.) = 100,000 Btu(IT)

### Energy per unit mass (Specific energy - mass)

british thermal unit(international table)/pound [Btu(IT)/lb], gigajoule/tonne [GJ/t], kilocalorie/kilogram [kcal/kg] = calorie/gram[cal/g], kilojoule/kilogram [kJ/kg] = joule/gram [J/g], kilowatt hour/kilogram [kWh/kg]

• 1 Btu(IT)/lb = 0.002326 GJ/t = 2.326 kJ/kg = 0.5559 kcal/kg = 0.000646 kWh/kg
• 1 cal/g = 1 kcal/kg = 0.0041868 GJ/t = 4.1868 kJ/kg = 1.8 Btu(IT)/lb = 0.001162 kWh/kg
• 1 GJ/t = 1000 kJ/kg  = 429.923 Btu(IT)/lb = 238.846 kcal/kg = 0.278 kWh/kg
• 1 J/g = 1 kJ/kg = 10-3 GJ/t  = 0.23885 kcal/kg = 0.4299 Btu(IT)/lb = 0.0002778 kWh/kg
• 1 kcal/kg = 1 cal/g = 0.0041868 GJ/t = 4.1868 kJ/kg = 1.8 Btu(IT)/lb = 0.001162 kWh/kg
• 1 kJ/kg = 1 J/g = 10-3 GJ/t  = 0.23885 kcal/kg = 0.4299 Btu(IT)/lb = 0.0002778 kWh/kg
• 1 kWh/kg = 1547.7 Btu(IT)/lb = 3.6 GJ/t = 3600 kJ/kg = 860.421 kcal/kg

### Energy per unit volume (Specific energy - volume)

british thermal unit(international table)/cubic foot [Btu(IT)/ft3 ], british thermal unit(international table)/gallon(US liquid) [Btu(IT)/gal(US liq)], british thermal unit(international table)/liter [Btu(IT)/l], joule/cubic meter [J/m3 ], kilocalorie/cubic metre [kcal/m3 ]

• 1 Btu(IT)/ft3 = 0.1337 Btu(IT)/gal(US liq) = 0.03531 Btu(IT)/l = 8.8992 kcal/m3 = 3.7259x104 J/m3
• 1 Btu(IT)/gal(US liq) = 0.2642 Btu(IT)/l = 7.4805 Btu(IT)/ft3 = 66.6148  kcal/m3 = 2.7872x105 J/m3
• 1 Btu(IT)/l = 3.78541 Btu(IT)/gal(US liq) = 28.3168 Btu(IT)/ft3 = 252.164 kcal/m3 = 1.055x106 J/m3
• 1 J/m3 = 2.684x10-5 Btu(IT)/ft3 = 3.5879x10-6 Btu(IT)/gal(US liq) = 9.4782x10 -7 Btu(IT)/l = 2.388x10-4 kcal/m3
• 1 kcal/m3 = 0.1124 Btu(IT)/ft3 = 0.01501 Btu(IT)/gal(US liq) = 0.003966 Btu(IT)/l  = 4186.8 J/m3

### Force

dyne [dyn], kilogram force [kgf]=kilopond [kp], newton [N], ounce force [ozf] (avoirdupois), poundal [pdl], pound force [lbf], kilopound force [kipf]=[kip]=[klb]=[klbf]

• 1 dyn = 1 g cm/s2= 1x10 -5 N
• 1 kgf = 1 kp = 9.80665 N = 2.2046 lbf = 70.932 pdl
• 1 kip = 1000 lbf = 4448.2216 Newtons (N) = 4.4482216 kilonewtons (kN) = 453 kgf
• 1 kp = 1 kgf = 9.80665 N = 2.2046 lbf = 70.932 pdl
• 1 lbf = 16 ozf = 0.001 kip = 4.44822 N = 0.4536 kp = 32.174 pdl = 4.4482x105 dyn
• 1 N = 1 kg m/s2= 1 J/m = 105 dyn = 0.1020 kp = 0.1020 kgf = 1/9.80665 kgf  =  7.233 pdl = 0.2248 lbf = 3.5969 ozf = 0.000225 kip
• 1 ozf = 1/16 lbf = 0.0625 lbf = 2.0109 pdl = 0.02835 kgf = 27801.39 dyn = 0.27801 N
• 1 pdl = 0.13826 N = 0.014098 kp = 0.03108 lbf

### Frequency

hertz [Hz]= cycle/second [cps]

• 1 Hz = 1 cps

### Heat flow rate

british thermal unit/hour [Btu/h], british thermal unit/second [Btu/s], foot-pound force/second [ft lbf/s], horsepower(Imperial) [hp(I)], horspower (metric) [hp(M)]=[hk], kilocalorie/hour [kcal/h], kilopond-meter/second [kpm/s], kilowatt [kW]=kilojoule/second [kJ/s], ton of refrigeration [ton of refrigeration], watt [W],

• 1 Btu/s = 1.0551 kW = 1055.1 W = 1.434 hk = 1.415 hp(I)= 107.586 kpm/s
• 1 Btu/h = 2.931x10-4 kW = 0.0299 kpm/s = 0.252 kcal/h = 3.986x10-4 hk = 3.939x10-4 hp = 0.2163 ft lb/s
• 1 ft lbf/s = 1.35582 W = 0.00135582 kW = 0.1382 kpm/s = 1.165 kcal/h = 4.6262 Btu(IT)/h = 1.843x10-3 hk = 1.818x10-3 hp(I)
• 1 hk = 1 hp(M) = 0.735499 kW = 75.000 kpm/s = 632.4 kcal/h = 2510 Btu(IT)/h = 0.9863 hp(I) = 542.5 ft lb/s
• 1 hp(I) = 0.74570 kW = 76.04 kpm/s = 641.2 kcal/h = 2545 Btu(IT)/h = 1.014 hk = 550.3 ft lb/s
• 1 kcal/h = 1.163x10-3 kW = 0.1186 kpm/s = 3.968 Btu(IT)/h = 1.581x10-3 hk = 1.5596x10-3 hp(I) = 0.85779 ft lb/s
• 1 kpm/s = 9.8067x10-3 kW = 8.4322 kcal/h = 33.4615 Btu(IT)/h = 0.01333 hk = 0.01315 hp(I) = 7.233 ft lb/s
• 1 kW = 1 kJ/s = 1000 W = 1000 J/s = 3.6x106 J/h = 102.0 kpm/s = 859.8 kcal/h = 3412 Btu(IT)/h = 1.3596 hk = 1.341 hp(I) = 737.6 ft lb/s
• 1 ton of refrigeration = 200 Btu(IT)/min = 3.51685 kW
• 1 W = 1x10-3 kW = 0.23885 cal(IT)/s

### Heat flux

british thermal unit/(square foot hour) [Btu/(ft2h)], kilocalorie/(square centimetre hour) [kcal/(cm2h)], watt/square metre [W/m2]

• 1 Btu/(ft2h) = 3.1525 W/m2= 0.000271 kcal/(cm2h)
• 1 kcal/(cm2h) = 11587 W/m2= 3690 Btu/(ft2h)
• 1 W/h = 0.3172 Btu/(ft2 h) = 8.63x10-5 kcal/(cm2h)

### Heat generation per unit mass (Specific energy - mass)

british thermal unit(international table)/pound [Btu(IT)/lb], gigajoule/tonne [GJ/t], kilocalorie/kilogram [kcal/kg] = calorie/gram[cal/g], kilojoule/kilogram [kJ/kg] = joule/gram [J/g], kilowatt hour/kilogram [kWh/kg]

• 1 Btu(IT)/lb = 0.002326 GJ/t = 2.326 kJ/kg = 0.5559 kcal/kg = 0.000646 kWh/kg
• 1 cal/g = 1 kcal/kg = 0.0041868 GJ/t = 4.1868 kJ/kg = 1.8 Btu(IT)/lb = 0.001162 kWh/kg
• 1 GJ/t = 1000 kJ/kg  = 429.923 Btu(IT)/lb = 238.846 kcal/kg = 0.278 kWh/kg
• 1 J/g = 1 kJ/kg = 10-3 GJ/t  = 0.23885 kcal/kg = 0.4299 Btu(IT)/lb = 0.0002778 kWh/kg
• 1 kcal/kg = 1 cal/g = 0.0041868 GJ/t = 4.1868 kJ/kg = 1.8 Btu(IT)/lb = 0.001162 kWh/kg
• 1 kJ/kg = 1 J/g = 10-3 GJ/t  = 0.23885 kcal/kg = 0.4299 Btu(IT)/lb = 0.0002778 kWh/kg
• 1 kWh/kg = 1547.7 Btu(IT)/lb = 3.597 GJ/t = 3597.1 kJ/kg = 860.421 kcal/kg

### Heat generation per unit volume (Specific energy - volume)

british thermal unit(international table)/cubic foot [Btu(IT)/ft3 ], british thermal unit(international table)/gallon(US liquid) [Btu(IT)/gal(US liq)], british thermal unit(international table)/liter [Btu(IT)/l], joule/cubic metre [J/m3 ], kilocalorie/cubic metre [kcal/m3 ]

• 1 Btu(IT)/ft3 = 0.1337 Btu(IT)/gal(US liq) = 0.03531 Btu(IT)/l = 8.8992 kcal/m3 = 3.7259x104 J/m3
• 1 Btu(IT)/gal(US liq) = 0.2642 Btu(IT)/l = 7.4805 Btu(IT)/ft3 = 66.6148  kcal/m3 = 2.7872x105 J/m3
• 1 Btu(IT)/l = 3.78541 Btu(IT)/gal(US liq) = 28.3168 Btu(IT)/ft3 = 252.164 kcal/m3 = 1.055x106 J/m3
• 1 J/m3 = 2.684x10-5 Btu(IT)/ft3 = 3.5879x10-6 Btu(IT)/gal(US liq) = 9.4782x10 -7 Btu(IT)/l = 2.388x10-4 kcal/m3
• 1 kcal/m3 = 0.1124 Btu(IT)/ft3 = 0.01501 Btu(IT)/gal(US liq) = 0.003966 Btu(IT)/l  = 4186.8 J/m3

### Heat transfer coefficient

british thermal uni(international table/(square foot hour degree fahrenheit) [BTU(IT)/(ft2h°F)], kilocalorie/(square metre hour degree celcius) [kcal/(m2 h°C)], watt/(square metre degree kelvin) [W/(m2K)]

• 1 Btu/(ft2h°F)  = 4.882 kcal/(m2h°C) = 5.678 W/(m2K)
• 1 kcal/(m2h°C) = 0.205 Btu/(ft2h°F) = 1.163 W/(m2K)
• 1 W/(m2K) = 0.1761 Btu/(ft2h°F) = 0.85984 kcal/(m2h°C)

• 1 ftH2O/100 ft = 0.44 psi/100 ft = 9.8 kPa/100 m = 1000 mmH2O/100 m
• 1 psi/100 ft = 2.3 ftH2O/100 ft = 2288 mmH2O/100 ft = 22.46 kPa/100 m

### Inductance

abhenry [abH]= Nanohenry [nH], henry [H] = ohm second [Ω s] = joule/square ampere [J/A2] = kilogram square metre/(square second square ampere) [kg m2/(s2A2)], microhenry [μH], millihenry [mH]

• abH = 1 nH = 1x10-9H = 1x10-6 mH = 1x10-3 μH
• 1 H = 1x103 mH = 1x106 μH = 1x109 abH
• 1 μH = 1x10-6 H = 1x10-3 mH = 1x103 abH
• 1 mH = 1x10-3 H = 1x103 μH = 1x106 abH

### Information Storage

• 1 bit = 0.125 byte (computers)
• 1 byte = 8 bit

### Length

cable [cable], caliber [caliber], centimeter [cm], chain(Gunter's) = chain(surveyors') [ch], chain(Ramsden's) = chain(engineers') [ch], cubit [cubit], fathom (nautical) [ftm], fermi = femtometer [fm], foot [ft], furlong [fur], hand [hh]=[hd], inch [in], kilometer [km], light year, metre [m], milli-inch = millesimus [mil] = thousands of an inch [thou], micrometer=micron [μm], millimicron [mμ], (Gunther's) link [li], mile [mi], nautical mile [NM]=[nmi]= seamile [sm], perch = pole = rod [rd], pica [pc], pixel [px] point (ATA system) [pt], yard [yd], ångstrom [Å]

Metre is the British, SI and elsewhere spelling of the unit of length equal to 100 cm. Meter is the American spelling of the same unit.

• 1 cable (International) = 1/10 nmi  = ~100 ftm = 202.54 yd = 607.61 ft = 185.37 metre = 0.00167 degree latitude
• 1 cable length (US Survey) = 120 fathom = 240 yd = 720 ft  = 219.46 meter = 729.14 caliber
• 1 caliber = 0.01 in = 0.254 mm = 10 mil
• 1 ch (Gunter's) = 1/10 fur = 100 li (Gunter's) = 22 yd = 198 hh = 66 ft = 1/80 mile = 0.660 Ramsden's ch = 4.00001 rod = 4.00001 pole = 2011.7 centimeter = 20.117 meter = 792 inch
• 1 ch (engineer's or Ramsden's) = 100 ft = 100 links = 30.48 m
• 1 cm = 10-2 m = 0.3937 in = 0.03281 ft = 1x10 8 Ångstrom = 0.03281 ft = 0.0984 hh = 0.3937 in = 1x10 -5 km = 0.0497 li = 0.000497 Gunter's ch = 0.0003281 Ramsden's ch  = 10 000 μm = 10 000 micron = 5.3996x10-6 [nmi] = 6.2137x10-6 mi = 10 mm = 1x107 mμ = 393.70 mil = 2.371 pc. = 28.3465 pt = 0.001988 rod (US Survey) = 0.01094 yard
• 1 cubit = 0.5 yd = 1.5 ft = 18 in = 0.4572 m = 45.72 cm
• 1 fm = 10 -15 m
• 1 ft = 0.3048 m = 12 in = 0.3333 yd = 1.894x10-4 mile = 30.48 cm = 304.8 mm
• 1 ft (U.S. Survey) = 1.000002 ft (International)
• 1 ft (International) = 0.999998 ft (U.S. Survey)
• 1 ftm = 2 yd = 6 feet = 1.828804 meters
• 1 fur = 660 ft = 40 rd = 1/8 mi
• 1 hh = 4 in = 4000 mil = 0.1016 m
• 1 in = 25.4 mm = 2.54 cm = 0.0254 m = 0.08333 ft = 0.02778 yd = 1.578x10 -5 mi = 0.25 hh
• 1 km = 0.621137 mi = 3280.83 ft = 1093.61 yds = 0.53996 nmi
• 1 land league = 3 miles
• 1 m = 3.28083 ft = 39.3701 in = 1.093613 yd = 6.2137x10-4 mile
• 1 mil (Norway and Sweden) = 10 kilometres
• 1 mile = 1.6093 km = 1609.3 m = 63346 in = 5280 ft = 1760 yd
• 1 mm = 10-3 m  = 0.03937 in = 1000 micron
• 1 nmi = 1852 m = 1.151 mi = 6076.1 ft = 0.016667 degree of latitude
• 1 pc = 12 pt = 16 px = 0.42174 cm = 0.1660 in
• 1 pt = 1/12 pc = 0.0833 pc = 0.0352 cm = 0.01389 in = 13.89 mil
• 1 rd = 1 pole = 1 perch = 5.5 yd = 16 1/2 ft = 1/320 mi = 5.029 m
• 1 yd = 3 ft = 36 in = 0.9144 m = 5.682x10-4 mile
• 1 Ångstrom = 1 Å = 10 -10 m = 1x10-8 cm = 1x10-4 μm = 0.0001 micron = 0.1 mμ = 3.937x10-9in
• 1 Astronomical Unit = Average Distance between the Earth and the Sun = 1.495978x10 11 m
• 1 parsec (pc) = the distance at which one AU would subtend a second of arc = 3.085678 x 10 16 m = 3.261633 ly = 206265 AU
• 1 light year = 63241.08 Astronomical Units (AU) = 9.46053x10 15 m = 5.8786x10 12 mile (US statute) = 0.306601 parsec

### Luminous Emittance (Illuminance)

footcandle [fc], gigalux [Glx], Lux [lx], lumen/square centimetre [lm/cm2], lumen/square foot [lm/ft2], lumen/square inch [lm/in2], millilux [mlx] = nox [nox], phot [ph]

• 1 fc = 1 lm/ft2= 0.006944 lm/in2= 10.76391 lx = 0.107639x10-9Glx = 0.00107639 lm/cm2
• 1 Glx = 100 000 lm/cm2= 92.90304x106 fc = 645160 lm/in2
• 1 lm/cm2= 1 ph = 1x104 lx = 929.030 fc  = 6.4516 lm/in2
• 1 lm/ft2= 1fc = 0.001076 lm/cm2= 10.76639 lx
• 1 lm/in2= 144 fc = 1550 lx = 0.1550003 lm/cm2
• 1 lx = 1000 mlx = 0.0001 lm /cm2= 0.0001 ph = 0.0929 fc = 0.0006452 lm/in2
• 1 mlx = 1 nox = 0.001 lx
• 1 nox = 1 mlx = 0.001 lx
• 1 ph = 1 lm/cm2= 1x104 lx = 929.030 fc = 6.4516 lm/in2

### Luminous Flux

candela steradian [cd sr], lumen [lm], lux square metre [lx m2]

• 1 cd sr = 1 lm = 1 lx/m2
• 1 lm = 1 cd sr = 1 lx/m2
• 1 lx/m2= 1 cd sr = 1 lm

### Luminous Intensity

candlepower [cp]=[CP], candlepower(new) [cp(new)] = candela [cd] = lumen/steradian [lm/sr], Hefnerkerze [HK]=hefner candle, millicandelas [mcd], voille [voille]

• 1 cd = 1 cp(new) = 1 lm/sr = 1000 mcd = 1.01937 cp = 1.106968 HK
• 1 cp = 0.981 cp(new) = 0.981 cd = 0.981 lm/sr = 1.085935 HK = 0.04837 voille = 4π lumen = 12.566 lumen
• 1 HK = 0.90337 cd = 0.9337 lm/sr = 0.920865 cp
• 1 lm/sr = 1 cd = 1.01937 cp = 1.106968 HK
• 1 mcd = 0.001 cd
• 1 voille = 20.17 cd = 20.5606 cp = 21.9239 HK

### Luminous Intensity Density

candela/square centimetre [cd/cm2] = (lumen/steradians)/square centimetre [lm/(sr cm2)], candela/square metre [cd/m2], lambert [L]=[Lb], (lumen/steradians)/square foot [lm/(sr ft2)],

• 1 cd/cm2= 1 lm/(sr cm2) = 10 000 1 cd/m2= 3.1416 Lb
• 1 cd/m2= 0.0001 lm/(sr cm2) = 0.0929 lm/(sr ft2) = 0.00031416 Lb
• 1 Lb = 1/π cd/cm2= 0.3183 cd/cm2= 3183.1 cd/m2

### Magnetic Flux

gauss square centimetre [G cm2] = maxwell [Mw], magnetic flux quantum [Φ], milliweber [mWb], microweber [μWb], tesla square metre [T m2] = volt second [Vs] = weber [Wb]

• 1 G cm2= 1 Mw = 1x10-8 Wb = 1x10-8 T m2= 1x10-8 Vs = 4.835979x106 Φ
• 1 Mw = 1 G cm2= 1x10-8 Wb = 1x10-8 T m2= 1x10-8 Vs = 4.835979x106 Φ
• 1 mWb = 0.001 Wb = 1x105 Mw = 4.84x10 11 Φ
• 1 μWb = 1x10-6 Wb = 100 Mw
• 1 Φ = 2.067834x10 -7 Mw = 2.067834x10 -7 G cm2=  2.067834x10 -15 Vs = 2.067834x10 -15 Wb =  2.067834x10 -15 T m2
• 1 T m2= 1 Vs = 1 Wb = 4.84×10 14 Φ = 1x10 8 Mw = 1x10 8 G cm2
• 1 Vs = 1 T m2= 1 Wb = 4.84×10 14 Φ = 1x10 8 Mw = 1x10 8 G cm2
• 1 Wb = 1 T m2= 1 Vs = 1000 mWb = 1x106 μWb = 4.84×10 14 Φ = 1x10 8 Mw = 1x10 8 G cm2

### Magnetic Flux Density

gamma-flux=gamma [γ], gauss [G]=[Gs] = maxwell/square centimeter [Mw/cm2] = line/square centimetre [line/cm2] = gilbert/centimeter [Gb/cm], kilogram/(ampere square second) [kg/(A s2)] = tesla [T]

• 1 γ = 1x10 -5 G =  1x10-9T
• 1 G = 1 Mw/cm2= 1 Gb/cm = 1 line/cm2= 1x105 γ = 1x10-4 T = 6.4516 line/in2= 1x10-8 Wb/cm2= 6.452x10-8 Wb/in2

### Magnetic Force

gilbert [Gb], ampere-turn [At]

• 1 gilbert = 0.79577 At
• 1 At = 4π/10 Gb = 1.2566 Gb

### Magnitude of a Physical Quantity (Power or intensity relative to a specified or implied reference level)

• 1 bel = 10 decibel
• 1 decibel = 0.1 bel

### Mass, Weight

atomic mass [u], carat [ct], cental=centum weight=quintal=hundredweight (short) [cwt], dram [dr], grain = grain (troy) [gr], gram [g], hectogram [hg], hundredweight (long) = hundredweight (imperial) [cwt], kilogram [kg], kilopound [kip], ounce (International avoirdupois) [oz], ounce (troy) [ozt]=ounce (apothecary), pennyweight=denarius weight [dwt]=[pwt]=[PW], pound (International avoirdupois) [lb] = pound mass [lbm], pound (apothecary) [lb(apothecary)]=pound (troy) [lbt], scruple [scruple], slug [sl], stone=stone weight [st], ton (long)= ton(UK) = ton [ton], ton (short)=ton(US) [ton], tonne = ton (metric) [t]

• 1 ct(metric) = 0.2 gram = 200 milligram = 3.0865 gr = 0.11288 dr = 0.05144 dr (apothecary)
• 1 cwt(long/Imperial) = 8 stone = 112 lb = 50.8023 kg
• 1 cwt(short/US) = 1 cental = 100 pound = 45.359 kilogram
• 1 dr = 0.45573 dr(apothecary) = 0.0625 oz = 0.003906 lb
• 1 dr(apothecary) =  3 scruples(apothecary) = 2.194 dr
• 1 dwt = 24 gr = 1/20 ozt, 1/240 troy pound = 1.55517 g
• 1 g = 1/1000 kg = 15.432 gr = 0.03527 oz = 0.002205 lb
• 1 gr = 0.05 scruple = 0.000143 lb = 0.000174 lbt = 0.0648 g
• 1 hg = 100 g = 0.2205 lb = 3.53 oz
• 1 kg = 1000 g = 2.2046 lb = 0.1575 st = 6.8521x10-2 sl
• 1 kip = 0.5 ton (short) = 10 cwt (short) = 1000 lb = 16000 oz = 7x106 gr = 0.45359 t = 453.59 kg
• 1 lb = 16 oz = 0.4536 kg = 453.6 g = 7000 gr = 0.03108 sl = 1.2153 lbt
• 1 lb(apothecary) = 1 lbt = 0.82286 lb = 12 oz (apothecary) = 12 ozt = 13.166 oz = 5760 gr = 0.37324 kg = 373 g
• 1 lbt = 1 lb(apothecary) = 0.82286 lb = 12 oz (apothecary) = 12 ozt = 13.166 oz = 5760 gr = 0.37324 kg = 373 g
• 1 oz = 16 dram = 28.35 g = 437.5 gr = 0.0625 lb = 0.0000279 long ton (Imperial) = 0.00003125 long ton (US) = 0.000558 cwt long (Imperial) = 0.000625 cwt short (US)
• 1 oz(apothecary) = 1 ozt = 8 dr = 1/12 pound (apothecary) = 31.1 g
• 1 ozt = 1/12 pound (troy)= 31.1034768 g = 480 gr
• 1 scruple = 1/24 oz = 0.04571 oz = 1/3 dr = 20 gr = 1.29598 g = 6.4799 ct
• 1 sl = 14.594 kg = 32.174 lb
• 1 st = 14 lb = 224 oz = 6.35029 kg
• 1 t = 0.9842 long ton (Imperial) = 1.10231 short ton (US) = 1000 kg = 106 g = 109 mg
• 1 ton (long) = 1 ton(UK) = 20 cwt (long) = 2240 lb = 160 st = 22.4 cwt (short) = 1,016.0469088 kg
• 1 ton (short) = 1 ton(UK) = 20 cwt (short)  =  2000 lb = 2 kip =  32 000 oz = 907.18474  kg
• 1 u  = 1/12 atomic mass units of with the carbon-12 atom (definition of atomic mass) = 1.66054 x 10 -27 kg = 931.494 MeV

### Mass (Weight) flow rate

kilogram/hour[kg/h], kilogram/second [kg/s], pound/hour [lb/h], pound/minute [lb/min], pound/second [lb/s], ounce/minute [oz/min], ounce/second [oz/s], tonne/day [t/d]

• 1 kg/h = 0.016667 kg/min = 2.778x10-4 kg/s = 0.024 t/d = 2.20462 lb/h = 3.67x10-2 lb/min = 0.5879 oz/min
• 1 kg/s = 3,600 kg/h = 60 kg/min = 86.4 t/d = 2.20462 lb/s = 132.28 lb/min = 35.27396 oz/s
• 1 lb/h = 0.016667 lb/min = 0.26667 oz/min = 1.26x10-4 kg/s = 0.4536 kg/h = 0.01089 t/d
• 1 lb/min = 0.01667 lb/s = 16 oz/min = 7.56x10-3 kg/s = 0.4536 kg/min 0.6532 t/d = 27.216 kg/h
• 1 lb/s = 60 lb/min = 3600 lb/h = 16 oz/s = 0.4536 kg/s = 39.1904 t/d
• 1 oz/min = 0.01667 oz/s = 3.75 lb/h = 0.02835 kg/min = 1.7 kg/h = 0.0408 t/d
• 1 oz/s = 60 oz/min = 3600 oz/h = 0.0625 lb/s = 0.0283 kg/s = 2.45 t/d = 102.058 kg/h
• 1 t/d = 0.0116 kg/s = 41.6667 kg/h = 0.02552 lb/s = 1.5310 lb/min = 91.8593 lb/h = 24.4958 oz/min = 0.40826 oz/s

### Mass (Weight) per unit Area

pound/square foot [lb/ft2], kilogram/square metre [kg/m2]

• 1 lb/ft2= 4.8824 kg/m2
• 1 kg/m2=  0.2048 lb/ft2

### Mass (Weight) per unit Length

pound/foot [lb/ft], kilogram/metre [kg/m]

• 1 lb/ft = 1.49 kg/m
• 1 kg/m =  0.67 lb/ft

### Mass (Weight) per unit Volume

pound/cubic foot [lb/ft3 ], kilogram/cubic meter [kg/m3 ]

• 1 lb/ft3 = 16 kg/m3
• 1 kg/m3 =  0.062 lb/ft3

### Molar

molar [M] = mole/liter solution [mol/l]

• 1 M = 1 mol/l

### Mole

Mole [mol], kilomole [kmol], decimole [dmol], centimole[cmol], millimole [mmol], pound-mole [lb-mol]

• 1 kmol = 1000 mol = 2.2046 lb-mol
• 1 lb-mol = 0.45359 kmol
• 1 mol = 0.001 kmol = 10 dmol = 100 cmol = 1000 mmol = 6.0221415 10 23 atom = 6.0221415 10 23 molecule = number of atoms in 12 grams of carbon-12( 12 C)-isotop
• Avogadros constant = 6.0221415 10 23

### Nautical Measure

cable length [cable], fathom [fathom], foot [ft], inch [in], kilometer/hour [km/h], knot [knot]=nautical mile/hour [nmi/h], metre [m], metre/second [m/s], mile (US, Imperial) [mi], nautical leage [NL]=[nl], meter [m], nautical mile [NM]=[nmi] = sea mile,  yard [yd]

• 1 cable = 1 nmi/10 = 0,1 nmi = 185.2 m
• 1 fathom = 2 yd = 6 ft = 72 in = 1.8288 m
• 1 knot (nautical unit of speed) = 1 nmi/h = 1.852 km/h = 0.5144 m/s
• 1 league = 3 nmi = 5556 m
• 1 nmi = 10 cable = 6076.11 ft = 1.1508 mi = 1852 m
• one degree at the equator = 60 nautical miles = 69.047 miles
• 360 degrees = 21600 nautical miles = 24856.8 statute miles = circumference at equator

### Power

british thermal unit/second [Btu/s]=[BTU/s], british thermal unit/hour [Btu/h]=[Btuh], calorie /second [cal/s], erg/second [erg/s], foot pound-force/second [ft lbf/s], horsepower = cheval vapeur [hp],  horsepower (boiler) [hp(S)], horsepower (electric) [hp(E)], horsepower (metric) [hp(M)],  horsepower (mechanical=hydraulic=brake =Imperial) [hp(I)]=[bhp], horsepower (water) [WHP], joule/s [J/s], kilocalorie/second [kcal/s], kilogram-force meter/second [kgf m/s], kilowatt [kW], thousand British Thermal Units/hour [MBH], volt-ampere [VA], watt [W],

• 1 kW = 1000 W = 3412 Btu/h = 737.6 ft lbf/s = 1.3596 hp(M) (ps) = 1.341 hp(I) (bhp) = 101.97 kgf m/s = 737.6 ft lbf/s
• 1 Btu/s = 1055.1 W = 0.251997 kcal/s = 1.4345 hp(M)
• 1 Btu/h = 1 Btuh = 0.001 MBH = 0.2931 W = 0.2520 kcal/h = 0.2931 J/s = 0.2162 ft lbf/s
• 1 cal/s = 4.187 W = 4.187 J/s = 0.005692 hp(M)
• 1 ft lbf/s = 1.3558 W = 0.3238 cal/s = 1.1658 kcal/h
• 1 hp(E) = 746 W = 0.07606 hp(S) = 1.0004 hp(I) = 1.0143 hp(M) = 2545.45 Btu/h = 641 446 cal/h = 7.46x109 erg/s = 550.222 ft lbf/s = 0.7460 kW
• 1 hp(I) = 550 ft lbf/s = 0.07603 hp(S) = 0.9995 hp(E) = 1.0139 hp(M) = 745.7 W = 0.7457 kW = 2544.42 Btu/h = 641 186 cal/h = 7.46x109 erg/s
• 1 hp(M) = 75 kgf m/s = 0.07499 hp(S) = 0.98592 hp(E) = 0.98632 hp(I) = 735.499 W = 0.7355 kW = 2509.6 Btu/h = 632 416 cal/h = 7.35x109 erg/s = 542.477 ft lbf/s
• 1 hp(S) = 33 475 Btu/h = 13.147 hp(E) = 13.153 hp(I) = 13.335 hp(M) = 9807.9 W = 9.8079 kW = 33 0465 Btu/h = 8.433x106 cal/h = 98.08x109 erg/s = 7233.9 ft lbf/s
• 1 J/s = 1 W = 10x106 erg/s = 0.001 kW = 0.8598 kcal/h = 0.10197 kgf m/s = 3.412 Btu/h = 0.0009478 Btu/s = 0.7375 ft lbf/s
• 1 kcal/s = 4.1868 kW = 4186.8 W = 1000 cal/s = 426.9 kgf m/s = 4187 J/s = 3.968 Btu/s
• 1 kgf m/s = 9.807 W = 9.807 J/s = 2.342 cal/s = 0.01333 hp(M) = 7.233 ft lbf/s
• 1 MBH = 1000 Btu/h
• 1 W = 1 J/s = 1 kg m2/s3 = 1 Nm/s = 10x106 erg/s = 0.8598 kcal/h = 0.10197 kgf m/s = 3.412 Btu/h = 0.0009478 Btu/s = 0.7375 ft lbf/s
• 1 WHP = = 550.25 ft lbf/s = 0.07605 hp(S) = 1.00006 hp(E) = 1.00046 hp(I) = 1.01434 hp(M) = 0.746043 kW
• 1 cooling tower Ton = 15000 Btu /h = 3782 k Calories /h
• 1 refrigeration Ton = 12000 Btu/h cooling = 3.51

### Power per unit area

(british thermal unit(international table)/hour)/square foot [Btu(IT)/(h ft2)], (kilocalorie(international table)/h)/square metre [kcal(IT)/(h m2)], watt/square metre [W/m2]

• 1 Btu(IT)/(h ft2) = 2.7126 kcal(IT)/(h m2) = 3.1546 W/m2
• 1 kcal(IT)/(h m2) = 0.3687 Btu(IT)/(h ft2) = 1.1630 W/m2
• 1 W/m2= 0.3170 Btu/(h ft2) = 0.85984 kcal/(h m2)

### Pressure

atmosphere [atm], bar [bar], barye [Ba] (French), centimeters of mercury at given temperature [cm Hg], centimeter of water at given temperature [cm H2O], dyne/centimeter2[dyn/cm2], foot of water at given temperature [ft H2O], gram-force/centimeter2[gf/cm2], inch of mercury at given temperature [in Hg], inch of water (gauge) at given temperature [igw], inch of water column at given temperature [in wc] or [wc], kgram force/centimeter2[kgf/cm2], kgram force/meter2[kgf/m2]=kilopond/meter2[kp/m2], meter of water at given temperature [m H2O], millimeter of mercury at given temperature [mm Hg], newton/meter2[N/m2], ounce/square inch [oz/in2], pascal [Pa], pound-force/square foot [lbf/ft2]=[psf], pound-force/square inch [lbf/in2]=[psi], torr [Torr]

• 1 atm = Standard Atmospheric Pressure (Imperial and USA systems of units) = 1.01325 bar = 101.325 kN/m2= 101.325 kPa = 760 Torr=mm Hg at 0°C/32°F = 29.92 in Hg at 0°C/32°F = 14.696 psi = 0 psig = 33.899 ft H2O at 4°C/39°F = 10.33 m H2O at 4°C/39°F = 406.8 igw at 4°C/39°F = 2116.2 lbf /ft2= 1.033x104 kp/m2
• 1 bar = Standard Atmospheric Pressure (IUPAC system) = 0.98692 atm = 1000 mbar = 1x105 Pa (=N/m2) = 0.1 N/mm2= 1x106 Ba (French) = 10197 kp/m2= 10.197 m H2O at 4°C/39°F = 14.5038 psi (=lbf/in2) = 1x106 dyn/cm2= 750 mmHg at 0°C/32°F = 29.530 in Hg at 0°C/32°F = 75.0062 cm Hg at 0°C/32°F = 33.455 ft H2O at 4°C/39°F = 1019.72 gf/cm2= 1.01972 kgf /cm2= 2088.54 lbf /ft2(=psf)
• 1 Ba (French) = 1.0 dyn/cm2= 0.10 N/m2= 0.10 Pa
• 1 dyn/cm2= 14.504x10-6 lbf /in2= 1x10-6 bar = 0.000750 Torr
• 1 ft H2O at 4°C/39°F = 0.4335 psi (lbf /in2) = 62.43 lbf /ft2= 2989  Pa
• 1 in Hg at 0°C/32°F = 3 386.4 N/m2= 0.4911 lbf/in2= 13.59 igw at 4°C/39°F
• 1 in H2O at 4°C/39°F = 1 igw = 249.09 N/m2(Pa) = 0.0361 lbf /in2= 25.4 kgf /m2= 0.07356 in Hg at 0°C/32°F
• 1 kp/m2= 1 kgf /m2= 1 mm H2O at 4°C/39°F = 10-3 m H2O at 4°C/39°F = 0.0394 in H2O at 4°C/39°F = 0.0736 mm Hg at 0°C/32°F = 9.807 Pa (N/m2) = 9.807x10-6 N/mm2= 0.9678x10-4 atm = 1.422x10-3 psi
• 1 ksi = 1000 psi
• 1 mm Hg at 0°C/32°F = 1 Torr = 0.01934 lbf /in2= 0.0193 psi = 0.00133 bar = 0.00132 atm =  13.56 mm H2O at 4°C/39°F
• 1 m H2O at 4°C/39°F = 1000 kp/m2= 9806.7 Pa = 9.807x10-3 N/mm2= 0.0987 bar = 0.09678 atm = 1.422 psi
• 1 mm H2O at 4°C/39°F = 1 kgf /m2= 9.81 Pa = 0.0736 mm Hg at 0°C/32°F = 0.9678x10-4 atm
• 1 oz/in2= 1.73 igw at 4°C/39°F = 0.1273 in Hg at 0°C/32°F = 430.92 Pa
• 1 Pa = 10-6 N/mm2= 10 -5 bar = 0.1020 kp/m2= 1.020x10-4 m H2O at 4°C/39°F = 9.869x10-6 atm = 0.004 in H2O= 1.450x10-4 psi (lbf /in2) = 0.02089 lbf /ft2(psf)
• 1 psf (lbf /ft2) = 47.88 N/m2(Pa) = 0.006944 psi
• 1 psi (lbf /in2) = 0.001 ksi = 144 psf = 6894.8 Pa (N/m2) = 6.895x10-3 N/mm2= 0.06895 bar = 27.68 in H2O at 4°C/39°F = 2.307 ft H2O at 4°C/39°F = 703.1 mm H2O at 4°C/39°F = 2.036 in Hg at 0°C/32°F = 51.71 mm Hg at 0°C/32°F = 703.1 kgf/m2= 0.06805 atm = 16 oz/in2

Note! When using pressure units based on liquid columns (like mm H2O, in H2O, mm Hg ...) - be aware that densities of liquids varies with temperature. For more exact conversions consult temperature density sources for the actual liquids.

becquerel [Bq]=radioactive disintegration/second, curie [Ci], disintegration/minute [dpm], Gigabecquerel [GBq], microcurie [μCi], rutherford [Rd]

• 1 Bq = 1x10-9GBq = 1x10-6 Rd = 2.7027x10 -11 Ci = 2.7027x10 - 5 μCi = 60 dpm
• 1 Ci = 1x106 μCi = 3.70x10 10 Bq = 37 GBq = 3.70x104 Rd = 2.22x10 12 dpm
• 1 dpm = 0.01667 Bq= 1.667x10 -11 GBq  = 1.667x10-8 Rd = 4.5045x10 -13 Ci = 4.5045x10 -7 μCi
• 1 GBq = 1x109 Bq = 1000 Rd = 0.027027 Ci = 27027 μCi = 60 x 109 dpm
• 1 μCi = 1x10-6 Ci = 3.70x10 16 Bq = 3.70x107 GBq = 3.70x10 10 Rd = 2.22x1018 dpm
• 1 Rd = 1x106 Bq = 0.001 GBq = 2.7027x10 -5 Ci = 27.027 μCi = 60x106 dpm

erg/gram [erg/g], gray [Gy], adsorbed radiation dose [rad], joule/kilogram [J/kg], milligray [mGy],  røntgen equivalent physical [rep]=parker [parker]

• 1 erg/g = 1x10-4 Gy = 0.1 mGy = 0.01 rad
• 1 Gy = 1 J/kg = 100 rad = 1000 mGy = 10 000 erg/g
• 1 rad = 0.010 Gy = 100 erg/g
• 1 rep = 83 or 93 erg/g = 8.3 or 9.3 mGy  (definition has varied over time)
• 1 mGy = 0.001 Gy = 0.1205 or 0.1075 rep

ampere second/kilogram [A s/kg], coulomb/kilogram [C/kg], røntgen(/roentgen) [R]= =german unit of radiation [german R]=tissue roentgen, french roentgen [french R]

• 1 R = 0.000258 C/kg = 0.000258 A s/kg = 2.2522 french R
• 1 C/kg = 1 A s/kg = 3875.97 R
• 1 french R = 0.444 german R = 0.000115 C/kg

microsievert [μSv], milli roentgen equivalent man [mrem], roentgen equivalent man [rem], sievert [Sv]=joule/kilogram [J/kg]

• 1 μSv = 1x10-6 Sv = 1x10-4 rem = 0.1 mrem
• 1 mrem  = 10 μSv = 0.001 rem = 1x10-5 Sv
• 1 Sv = 1 J/kg = 1x106 μS = 100 rem = 1x105 mrem
• 1 rem = 10000 μSv = 1000 mrem = 0.01 Sv

### Resistance, Electrical

abohm [abΩ], megaohm [MΩ], microohm [μΩ], ohm [Ω]=volt/ampere [V/A],

• 1 abΩ = 1x10-15 MΩ = 1x10-3 μΩ = 1x10-9Ω
• 1 μΩ = 1000 abΩ = 1x10-12 MΩ = 1x10-6 Ω
• 1 MΩ = 1x1012 μΩ = 1x106 Ω = 1x1015 abΩ
• 1 Ω = 1 V/A = 1x106 μΩ = 1x10-6 MΩ = 1x109 abΩ

### Rotation

• 1 deg/min = 0.043 Hz = 0.01745 rad/min = 1.047 rad/h = 0.002778 rpm = 4 r/d = 10 080 deg/w
• 1 deg/w = 99.21x10-6 deg/min
• 1 Hz = 1 r/s = 1 cps = 60 rpm = 2π rad/s = 6.28 rad/s = 22619 rad/h = 360 deg/s
• 1 r/d = 6.94x10-4 rpm = 0.00417 deg/s
• 1 r/min = 1 rpm = 1/60 r/s = 0.01667 r/s = 0.105 rad/s = 6 deg/s = 360 deg/min = 1440 r/d
• 1 r/s = 1 Hz = 1 cps = 60 rpm = 2π rad/s = 6.28 rad/s = 360 deg/s
• 1 rad/h = 4.42x10 -5 Hz = 2.65x10-3 rpm = 0.9549 deg/min
• 1 rad/min = 0.00263 Hz = 0.1591 rpm = 57.2958 deg/min
• 1 rad/s = 1/(2π) r/s = 0.159 cps = 9.549 rpm = 57.30 deg/s

### Section Modulus

cubic centimetre [cm3 ], cubic foot [ft3 ], cubic inch [in3 ], cubic metre [m3 ]

• Elastic Section Modulus
• 1 cm3 = 10-6 m3 = 3.531x10 -5 ft3 = 0.061023 in3
• 1 m3 = 106 cm3 = 35.31466 ft3 = 61023.76 in3
• 1 ft3 = 0.02832 m3 = 28372 cm3 = 1728 in3
• 1 in3 = 1.6387x10 -5 m3 = 16.387 cm3 = 5.78 10-4 ft3

### Sound pressure level

bel [B], decibel(sound pressure level) [dB SPL], neper [Np], pascal (root mean square sound pressure) [Pa]

• 1 B = (1/2)*ln10 Np = 1.15129 Np
• 1 dB SPL = (1/20)*ln10 Np = 0.11529 Np
• 1 Np = 8.68589 dB
• 0.02 Pa = 60 dB
• 1 Pa = 94 dB SPL
• 200 Pa = 140 dB SPL

### Specific Heat

british thermal unit/(pound degree fahrenheit) [Btu/(lb°F)] = kilocalorie/(kilogram degree celcius) [kcal/(kg°C)], joule/(kilogram degree kelvin) [J/(kgK)], kilocalorie/(pound degree fahrenheit) [kcal/(lb°F)], kilojoule/(kilogram degree kelvin) [kJ/(kgK)]=kilojoule/(kilogram degree celcius) [kJ/(kg°C)], kilowatthour/(kilogram degree kelvin) [kWh/(kg K)]

• 1 Btu/(lb °F) = 1 Btu/(lb °R) = 1 kcal(IT)/(kg °C) = 1 kcal(IT)/(kg K) = 4186.8 J/(kg K) = 0.81647 kcal(IT)/(lb °F) = 1.163x10-3 kWh/(kg K)
• 1 J/(kg K) = 1 J/(kg °C) = 2.3885x10-4 kcal(IT)/(kg oC) = 2.3885x10-4 Btu/(lb °F) = 1.9501x10-4 kcal(IT)/(lb °F)
• 1 kcal(IT)/(kg °C) = 1 Btu/(lb °F) = 4186.8 J/(kg K) = 0.81647 kcal(IT)/(lb °F)
• 1 kcal(IT)/(lb °F) = 1.2248 Btu/(lb °F) = 1.2248 kcal(IT)/(kg °C) = 5127.9 J/(kg K)
• 1 kJ/(kg K) = 1 kJ/(kg °C) = 1000 J/(kg K) = 1000 J/(kg °C) = 0.23885 kcal(IT)/(kg °C) = 0.23885 Btu/(lb °F) = 0.19501 kcal(IT)/(lb °F) = 2.7778x10-4 kWh/(kg K)
• 1 kWh/(kg K) = 0.85985 kcal(IT)/(kg °C) = 0.85985 Btu/(lb °F) = 3.6 kJ/(kg K)

### Specific Energy (mass)

british thermal unit(international table)/pound [Btu(IT)/lb], gigajoule/tonne [GJ/t], kilocalorie/kilogram [kcal/kg] = calorie/gram[cal/g], kilojoule/kilogram [kJ/kg] = joule/gram [J/g], kilowatt hour/kilogram [kWh/kg]

• 1 Btu(IT)/lb = 0.002326 GJ/t = 2.326 kJ/kg = 0.5559 kcal/kg = 0.000646 kWh/kg
• 1 cal/g = 1 kcal/kg = 0.0041868 GJ/t = 4.1868 kJ/kg = 1.8 Btu(IT)/lb = 0.001162 kWh/kg
• 1 GJ/t = 1000 kJ/kg  = 429.923 Btu(IT)/lb = 238.846 kcal/kg = 0.278 kWh/kg
• 1 J/g = 1 kJ/kg = 10-3 GJ/t  = 0.23885 kcal/kg = 0.4299 Btu(IT)/lb = 0.0002778 kWh/kg
• 1 kcal/kg = 1 cal/g = 0.0041868 GJ/t = 4.1868 kJ/kg = 1.8 Btu(IT)/lb = 0.001162 kWh/kg
• 1 kJ/kg = 1 J/g = 10-3 GJ/t  = 0.23885 kcal/kg = 0.4299 Btu(IT)/lb = 0.0002778 kWh/kg
• 1 kWh/kg = 1547.7 Btu(IT)/lb = 3.597 GJ/t = 3597.1 kJ/kg = 860.421 kcal/kg

### Specific Energy (volume)

british thermal unit(international table)/cubic foot [Btu(IT)/ft3 ], british thermal unit(international table)/gallon(US liquid) [Btu(IT)/gal(US liq)], british thermal unit(international table)/liter [Btu(IT)/l], joule/cubic meter [J/m3 ], kilocalorie/cubic metre [kcal/m3 ]

• 1 Btu(IT)/ft3 = 0.1337 Btu(IT)/gal(US liq) = 0.03531 Btu(IT)/l = 8.8992 kcal/m3 = 3.7259x104 J/m3
• 1 Btu(IT)/gal(US liq) = 0.2642 Btu(IT)/l = 7.4805 Btu(IT)/ft3 = 66.6148  kcal/m3 = 2.7872x105 J/m3
• 1 Btu(IT)/l = 3.78541 Btu(IT)/gal(US liq) = 28.3168 Btu(IT)/ft3 = 252.164 kcal/m3 = 1.055x106 J/m3
• 1 J/m3 = 2.684x10-5 Btu(IT)/ft3 = 3.5879x10-6 Btu(IT)/gal(US liq) = 9.4782x10 -7 Btu(IT)/l = 2.388x10-4 kcal/m3
• 1 kcal/m3 = 0.1124 Btu(IT)/ft3 = 0.01501 Btu(IT)/gal(US liq) = 0.003966 Btu(IT)/l  = 4186.8 J/m3

### Specific Volume

cubic foot/pound [ft3 /lb], cubic inch/pound [in3 /lb], cubic metre/kg [m3 /kg], gallon(US)/pound [gal(US)/lb], gallon(UK)/pound [gal(UK)/lb], liter/kilogram [l/kg]

• 1 ft3 /lb = 1728 in3 /lb = 7.4805 gal(US)/lb = 6.22884  gal(UK)/lb = 62.43 liter/kg = 0.062 m3 /kg
• 1 gal(UK)/lb = 1.2010 gal(US)/lb = 0.16054  ft3 /lb
• 1 gal(US)/lb = 0.83267 gal(UK)/lb = 0.134 ft3 /lb = 231 in3 /lb = 8.35 l/kg = 0.0083 m3 /kg
• 1 in3 /lb = 0.00058 ft3 /lb = 0.0043 gal(US)/lb = 0.036 liter/kg = 0.000036 m3 /kg
• 1 l/kg = 0.01602 ft3 /lb = 27.7 in3 /lb = 0.12 gal(US)/lb = 0.001 m3 /kg
• 1 m3 /kg = 1000 l/kg = 16.02 ft3 /lb = 27680 in3 /lb = 119.8 gal(US)/lb = 99.7764 gal(UK)/lb

### Stress

• 1 psi (lb/in2) = 144 psf (lbf /ft2)= 6894.8 Pa (N/m2) = 6.895x10-3 N/mm2
• 1 N/m2= 1 Pa = 10-6 N/mm2= 1.4504x10-4 lb/in 2

### Surveyor's Measure

chain [chain], foot[ft], furlong [furlong], hand [hand], inch [in], leage [leage], link [link], metre [m], mile [mi], rod[rd], yard [yd]

• 1 chain = 4.17x10-3 leage = 0.1 furlong = 0.0125 mi = 4 rd = 22 yd = 66 ft = 100 link = 198 hand = 20.1168 m
• 1 ft = 1/660 furlong = 0.00152 furlong = 1/66 chain = 0.01515 chain = 1.5151 link = 3 hand = 12 in = 0.3048 m
• 1 furlong = 1/8 mi = 0.125 mi = 10 chain = 40 rd = 220 yd = 660 ft = 1000 link = 201.168 m
• 1 hand = 0.0051 chain = 0.0202 rd = 0.1111 yd = 0.3333 ft = 0.5051 link = 4 in = 0.1016 m
• 1 leage = 3 mi = 24 furlong = 240 chain = 960 rd = 5280 yd = 4828.03 m
• 1 link = 0.001 furlong = 0.01 chain = 0.04 rd = 0.22 yd = 0.66 ft = 1.98 hand = 7.92 in = 0.2012
• 1 m = 0.0006214 mi = 0.004971 furlong = 0.04971 chain = 0.19884 rd = 1.0936 yd = 3.2808 ft = 4.9710 link = 9.8425 hand = 39.370 in
• 1 mi = 1/3 leage = 8 furlong = 80 chain = 320 rd = 1760 yd = 5280 ft = 15840 hand = 63360 in = 1609.34 m
• 1 rd = 1/40 furlong = 0.025 furlong = 0.25 chain = 5.5 yd = 16.5 ft = 25 link = 49.5 hand = 198 in = 5.0292 m
• 1 yd = 1/22 chain = 0.04545 chain = 0.18182 rd = 3 ft = 4.5454 link = 9 hand = 36 in = 0.9144 m

### Temperature

celsius = degrees centigrade [°C], degrees fahrenheit [°F], kelvin [K], degrees rankine [°R]

• 0 °C corresponds to 32 °F, 273.16 K and 491.69 °R
• 0 °F corresponds to -17.78 °C, 255.37 K and 459.67 °R
• 0 K corresponds to -273.15 °C, -459.67 °F, and 0 °R
• 0 °R corresponds to -273.15°C, -459.67 °F, and 0 K
• T °C = (T °F - 32)/1.8
• T °C = T K - 273.15
• T °F = T °C *1.8 + 32
• T °F = (T K - 273.15)*1.8 + 32
• T K = T °C + 273.15
• T K = T °R /1.8
• T °R = T °F + 459.67
• T °R = 1.8 K

Temperature difference:

• ΔT °C = ΔT K = 1.8*ΔT °F = 1.8*ΔT °R
• ΔT °F = ΔT °R = ΔT °C /1.8 = ΔT K /1.8
• ΔT K = ΔT °C = 1.8*ΔT °F = 1.8*ΔT °R
• ΔT °R = ΔT °F = ΔT °C /1.8 = ΔT K /1.8

Note that °C is used for actual temperatures and C° is used for temperature differences.

### Thermal Conductivity

british thermal unit(international)/(foot hour degree fahrenheit) [Btu(IT)/(ft h°F], british thermal unit(international)/(inch hour degree fahrenheit) [Btu(IT)/(in h°F], british thermal unit(international)*inch/(square foot*hour*degree fahrenheit) [(Btu(IT) in)/(ft² h°F)], kilocalorie/(metre hour degree celcius) [kcal/(m h°C)], joule/(centimetre second degree kelvin) [J/(cm s K)], watt/(metre degree kelvin) [W/(m°C)],

• 1 Btu(IT)/(ft h°F) = 1/12 Btu(IT)/(in h°F) = 0.08333 Btu(IT)/(in h°F) = 12 Btu(IT)in/(ft2h°F) = 1.488 kcal/(m h°C) = 0.01731 J/(cm s K) = 1.731 W/(m K)
• 1 Btu(IT)/(in h°F) = 12 Btu(IT)/(ft h°F) = 144 Btu(IT)in/(ft2h°F) = 17.858 kcal/(m h°C) = 0.20769 J/(cm s K)= 20.769 W/(m K)
• 1 (Btu(IT) in)/(ft² h°F) = 0.08333 Btu(IT)/(ft h°F) = 0.00694 Btu(IT)/(in h°F) = 0.12401 kcal/(m h°C) = 0.001442 J/(cm s K) = 0.1442 W/(m K)
• 1 J/(cm s K) = 100 W/(m K) = 57.789 Btu(IT)/(ft h°F) = 4.8149 Btu(IT)/(in h°F) = 693.35 (Btu(IT) in)/(ft² h°F) = 85.984 kcal/(m h°C)
• 1 kcal/(m h°C) = 0.6720 Btu(IT)/(ft h°F) = 0.05600 Btu(IT)/(in h°F) = 8.0636 (Btu(IT) in)/(ft2h°F) = 0.01163 J/(cm s K) = 1.163 W/(m K)
• 1 W/(m K) = 0.01 W/(cm K) = 0.01 J/(cm s K) = 0.5779 Btu(IT)/(ft h°F) = 0.04815 Btu(IT)/(in h°F) = 6.9335 (Btu(IT) in)/(ft² h°F) = 0.85984 kcal/(m h°C)

### Thermal Diffusivity

square feet/second [ft2/s], square feet/hour [ft2/h], square metre/hour [m2/h], square metre/second [m2/s]

• 1 ft2/h = 2.7778x10-4 ft2/s = 0.09290 m2/h = 2.581x10 -5 m2/s
• 1 ft2/s = 3600 ft2/h = 334.45 m2/h = 0.09290 m2/s
• 1 m2/h = 2.7778x10-4 m2/s = 10.7639 ft2/h = 0.002990 ft2/s
• 1 m2/s = 3600 m2/h = 38750.1 ft2/h = 10.7639 ft2/s

### Thermal Expansion

length/(length degree fahrenheit) [in/(in°F)]=[m/(m°F)] = length/(length degree Rankin) [in/(in°R)]=[m/(m°R)], length/(length degree kelvin) [m/(m K)]=[in/(in K)]= length/(length degree celcius)[m/(m oC)]=[in/(in °C)]

• 1 m/(m oC) = 1 m/(m K) = 0.5556 in/(in°F) = 0.5556 m/(m°F) = 0.5556 = 0 .5556 in/(in°R) = 0.5556 m/(m°R)
• 1 in/(in oF) = 1 in/(in o R) = 1.8 m/(m oC) = 1.8 in/(in °C) = 1.8 m/(m K) = 1.8 in/(in K)

### Thermal Resistance

degree fahrenheit hour/british thermal unit (international) [°F h/Btu(IT)] = degree rankin hour/british thermal unit(international) [°R h/Btu(IT)], degree kelvin/watt [K/W]=degree celcius/watt [°C/W]

• 1 °C/W = 1 K/W = 0.5275 °F h/Btu = 0.5275 °R h/Btu(IT)
• 1 °F h/Btu(IT) = 1 °R h/Btu(IT) = 1.8958 K/W = 1.8958 °C/W
• 1 K/W = 1 °C/W = 0.5275 °F h/Btu = 0.5275 °R h/Btu(IT)
• 1 °R h/Btu(IT) = 1 °F h/Btu(IT) =1.8958 K/W = 1.8958 °C/W

### Thermal Resistivity

centimetre degree kelvin/watt [cm K/W], foot degree fahrenheit hour/british thermal unit(international) [ft°F h/Btu(IT)], metre degree kelvin/watt [m K/W]=meter degree celcius/watt [m°C/W], square foot degree fahrenheit hour/(british thermal unit(international) inch) [ft2°F h/(Btu(IT) in)]

• 1 cm K/W = 0.01 m oC/W = 0.01 m K/W = 0.001442 ft2°F h/(Btu(IT) in) = 0.01731 ft°F h/Btu(IT)
• 1 ft°F h/Btu(IT) = 1/12 ft2°F h/(Btu(IT) in) = 0.08333 ft2°F h/(Btu(IT) in) = 57.789 cm K/W = 0.5778 m oC/W = 0.5778 m K/W
• 1 ft2°F h/(Btu(IT) in) = 12 ft°F h/Btu(IT) = 693.35 cm K/W = 6.9335 m oC/W = 6.9335 m K/W
• 1 m oC/W = 1 m K/W = 100 cm K/W = 0.1442 ft2°F h/(Btu(IT) in) = 1.731 ft°F h/Btu(IT)
• 1 m K/W = 1 m oC/W = 100 cm K/W = 0.1442 ft2°F h/(Btu(IT) in) = 1.731 ft°F h/Btu(IT)

### Time

day (mean solar) [d], hour [h]=[hr], microsecond [μs], millisecond [ms], minute [min], month[month], nanosecond [ns], second [s]=[sec], sidereal day [d(sidereal)], sidereal month [month(sidereal)], sidereal year [y(sidereal)], week [week], year (calendar) [y]=[yr],

• 1 d = 1.0027379 d (sidereal) = 86400 s = 1440 min = 24 h = 1/7 week = 0.1428 week = 0.3285 month = 0.0027378 y
• 1 h = 1.002738 hour (sidereal) = 3600 s = 60 min = 1/24 d = 0.04167 d = 0.005952 week = 0.001369 month  = 0.000114 y
• 1 μs = 10-6 s
• 1 min = 60 s = 1/60 h = 0.01667 h = 1/1440 d = 0.000694 d
• 1 month = 1.11402 month(sidereal) = 4330 min = 730.5 h = 30.437 d = 4.348 week = 1/12 y = 0.0833 y
• 1 ms = 10-3 s
• 1 ns = 10-9s
• 1 s = 9192631770 cycles of the standard Cs-133 transition = 1000 ms = 1x106 μs = 1x109 ns = 1/60 min = 0.01667 min = 1/3600 h = 0.000278 h
• 1 week = 10080 min = 168 h = 7 d = 0.230 month = 0.0192 y
• 1 y = 0.999962 y(sidereal) = 31.56x106 s = 0.5259x106 min = 8766 h = 365.25 d = 52.18 week = 12 month

### Torque, Moment

foot-pound torque [ft lbf], gram-force centimetre [gf cm] kilogram-force metre [kgf m] = kilopond metre [kpm], kilogram-force centimetre [kgf cm], millinewton metre [mN m], newton metre [N m], inch ounce-force [in ozf ], inch pound-force [in lbf]

Note that the unit of work ft-lbf (foot-pound) is in practice commonly used as the unit of torque in the Imperial system. The unit for torque is lbf -ft (pound-foot) - one pound of force acting at a perpendicular distance of one foot from a pivot point.

• 1 gf cm = 1x10-6 kgf m = 1x10-4 kgf cm = 9.807x10 -5 Nm = 0.09807 mN m = 7.23x10 -5 ft lbf = 8.68x10-4 lbf in = 0.01389 in ozf
• 1 kgf m = 1 kpm = 1x106 gf cm = 100 kgf cm = 9.807 Nm = 9807 mN m = 7.23 ft lbf = 86.8 in lbf = 1389 in ozf
• 1 kgf cm = 0.01 kgf m = 1000 gf cm = 0.09807 Nm = 98.07 mN m = 0.0723 ft lbf = 0.868 in lbf = 13.89 in ozf
• 1 lbf ft = 1 ft lbf = 12 in lbf = 192.00 in oz = 0.1383 kgf m = 13.826 kgf cm = 13825.5 gf cm = 1.3558 Nm = 1355.82 mN m
• 1 kip foot = 1000 lbf ft
• 1 in lbf = 1/12 ft lbf = 0.08333 ft lbf = 16 in ozf = 0.01152 kgf m = 1.152 kgf cm = 1152.1 gf cm = 0.11299 Nm = 112.99 mN m
• 1 mN m = 0.001 N m = 10.197 gf cm = 1.0197x10-4 kgf m = 0.01020 kgf cm = 7.376x10-4 ft lbf = 0.008851 in lbf = 0.1416 in ozf
• 1 N m = 1000 mN m = 10197 gf cm = 0.10197 kgf m = 10.197 kgf cm = 0.7376 ft lbf = 8.851 in lbf = 141.6 in ozf
• 1 in ozf = 0.005208 ft lbf = 1/16 in lbf = 0.0625 in lbf = 0.0007201 kgf m = 0.07201 kgf cm = 72.008 gf cm = 0.007062 Nm = 7.061 mN m

### Velocity, Speed

foot/minute [ft/min], foot/second [ft/s], inch/second [in/s], kilometre/hour [km/h], knot [knot] = nautical mile per hour, metre/second [m/s], mile/hour [mi/h]=[mph]

• 1 ft/s = 0.3048 m/s
• 1 ft/min = 5.08x10-3 m/s = 0.0183 km/h = 0.0114 mph
• 1 mph = 0.44703 m/s = 1.609 km/h = 88 ft/min = 5280 ft/hr = 1.467 Ft./sec. = 0.8684 knots
• 1 m/s = 3.6 km/h = 196.85 ft/min = 2.237 mph
• 1 km/h = 0.2778 m/s = 54.68 ft/min = 0.6214 mph = 0.5396 knot
• 1 knot (nautical mile per hour) = 0.514444444 m/s = 1.852 kilometers per hour = 1.1515 miles per hour= 1 nautical miles per hour
• 1 League = 3.0 Miles
• 1 cm/sec = 1.9685 foot/min = 0.0328 foot/sec = 0.036 km/hr = 0.0194 knots (Int) = 0.6 meter/min = 0.02237 mile/hr = 0.000373 mile/min

### Viscosity Dynamic, Absolute

centipoise [cP], gram/(centimetre second) [g/(cm s)] = poise [P],  kilogram/metre second [kg/m s]=newton second/square metre [N s/m2]= pascal second [Pa s], pound/(foot hour) [lb/(ft h)], pound/(foot second) [lb/(ft s)], pound-force second/square foot [lbf s/ft2], reyn [reyn]= pound-force second/square inch [lbf s/in2]

• 1 cP = 10-3 Pa s = 0.01 P = = 0.01 g/(cm sec) = 6.721x10-4 lb/(ft s) = 2.4191 lb/(ft h) = 2.089x10 -5 lbf s/ft2
• 1 kg/(m s ) = 1 (N s)/m2= 1Pa s = 10 P = 1000 cP = 0.6720 lb/(ft s) = 2419.1 lb/(ft h) = 0.02089 lbf s/ft2
• 1 lb/(ft h) = 0.000278 lb/(ft s) = 8.63x10-6 lbf s/ft2= 0.000413 Pa s = 0.004134 P = 0.4134 cP
• 1 lb/(ft s) = 3600 lb/(ft h) = 0.03108 lbf s/ft2= 1.4882 Pa s = 14.882 P = 1488.2 cP
• 1 lbf s/ft2= 32.17 lb/(ft s) = 115826 lb/(ft h)= 47.88 Pa s = 478.80 P = 47880.26 cP
• 1 lbf s/in2= 1 reyn = 144 lbf s/ft2= 6894.76 Pa s
• 1 (N s)/m2= 1 kg/(m s) = 1Pa s = 10 P = 1000 cP = 0.6720 lb/(ft s) = 0.02088 slug/(ft s) = 2419.1 lb/(ft h) = 0.02089 lbf s/ft2
• 1 P = 1 g/(cm s) = 0.1 Pa s = 100 cP = 0.06720 lb/(ft s) = 241.91 lb/(ft h) = 0.002089 lbf s/ft2
• 1 Pa s = 1 kg/(m s) = 1 (N s)/m2= 10 P = 1000 cP = 0.6721 lb/(ft s) = 2419.1 lb/(ft h) = 0.02089 lbf s/ft2= 0.000145 reyn
• 1 reyn = 1 lbf s/in2= 144 lbf s/ft2= 6894.76 Pa s
• Dynamic, Absolute and Kinematic Viscosity - An introduction to dynamic, absolute and kinematic viscosity and how to convert between CentiStokes (cSt), CentiPoises (cP), Saybolt Universal Seconds (SSU) and degree Engler.

### Viscosity Kinematic

centistoke [cSt] = square millimeter/second [mm2/s], square foot/hour [ft2/h], square foot/second [ft2/s], square inch/second [in2/s], square metre/hour [m2/h], square metre/second [m2/s], stoke [St] = square centimetre/second [cm2/s]

• 1 cm2/s = 1 St = 100 mm2/s = 100 cSt = 1x10-4 m2/s = 0.36 m2/h = 1.07639x10-3 ft2/s = 3.875008 ft2/h = 0.1550003 in2/s
• 1 cSt = 1 mm2/s = 0.01 St = 1x10-6 m2/s = 0.0036 m2/h = 1.07639x10 -5 ft2/s = 0.03875008 ft2/h = 0.001550003 in2/s
• 1 ft2/h = 2.7778x10-4 ft2/s = 0.04 in2/s = 2.58064x10 -5 m2/s = 0.09290304 m2/h = 25.8064 cS = 0.258064 St
• 1 ft2/s = 3600 ft2/h = 144 in2/s = 0.09290304 m2/s = 334.451 m2/h = 92903.04 cSt = 929.0304 St
• 1 in2/s = 0.0069444 ft2/s = 25 ft2/h = 0.00064516 m2/s = 2.322576 m2/h = 645.16 cSt = 6.4516 St
• 1 m2/h = 1/3600 m2/s = 2.7778x10-4 m2/s = 2.7778 cm2/s = 277.78 mm2/s = 277.78 cSt = 2.7778 St = 0.00298998 ft2/s = 10.7639 ft2/h = 0.430556 in2/s
• 1 m2/s = 3600 m2/h = 1x104 cm2/s = 1x104 St = 1x106 mm2/s = 1x106 cSt = 10.7639 ft2/s = 38750.08 ft2/h = 1550003 in2/s
• 1 mm2/s = 1 cSt = 1x10-6 m2/s = 0.0036 m2/h = 0.01 cm2/s = 0.01 St = 1.07639x10 -5 ft2/s = 0.03875008 ft2/h = 0.001550003 in2/s
• 1 St = 1 cm2/s = 100 cSt = 100 mm2/s = 1x10-4 m2/s = 0.36 m2/h = 1.076x10-3 ft2/s = 3.875008 ft2/h = 0.1550003 in2/s

### Volume

acre-foot [ac-ft], acre-inch [ac-in], barrel [bbl], bourbon barrel [bbl(bourbon)] = american standard barrel [ASB], barrel of oil [bo]=[bbl(oil)] board foot [board ft], bucket [bucket], bushel [bu], butt [butt], chaldron [chaldron], cord [cord], cubic centimetre [cm3 ] = milliliter [ml]=[mL], cubic decimetre [dm3 ] = liter [l]=[L], cubic foot [ft3 ], cubic inch [in3 ], cubic metre [m3 ], cubic mile [mi3 ], cubic yard [yd3 ], cup [c], dram=drachm [dr] = fluid dram [fl dr], fifth [fifth], fluid ounce [fl oz] = shot [shot], gallon [gal], gill [gi], hectoliter [hl]=[hL], hogshead [hhd], jigger [jigger], minim [min], peck [pk], pint [pt], quart [qt], spice measure [spice measure], tablespoon [Tbsp], teaspoon [tsp]

Abbreviations for areas of use: UK= United Kingdom = Imperical     US= United States of America   dry= dry volumes   fed= federal   liq= liquid volumes    met= metric

• 1 ac-ft = 12 ac-in = 43560 ft3 = 1233.482 m3 = 1613.33 yd3 = 3.259x105 gal(US liquid) = 7758 bbl(US oil)
• 1 ac-in = 3630 ft3 = 102.7901531 m3 = 134.44 yd3 = 27154.286 gal(US liquid)
• 1 ASB = 200 l = 1.6772 bbl(US liq) = 1.2580 bbl(US oil) = 1.2221 bbl(UK)
• 1 bbl(beer) = 1 bbl(US fed) = 117.35 l = 31 gal(US liq)
• 1 bbl(bourbon) = 1 ASB = 200 l = 52.83 gal(US) = 44 gal(UK)
• 1 bbl(UK) = 163.659 l = 1.3725 barrel (US liq) = 1.4154 barrel (US dry)  = 1.0294 bbl(US oil) = 1.395 bbl(US fed) = 4.5 bu(UK) = 4.6440 bu(US, dry) = 36 gal(UK)= 5.7796 ft3 = 0.16366 m3
• 1 bbl(US oil) = 158.987 l = 1.333 bbl (US liq) = 0.97145 bbl(UK) = 42 gal(US liq) = 34.97 gal(UK) = 5.61458 ft3 = 9702 in3
• 1 bbl(US dry) = 115.628 l = 0.9697 barrel (US liq) = 0.7273 bbl(US oil) = 0.7066 bbl(UK) = 3.28122 bu(US dry) = 4.0833 ft3 = 7056 in3 = 0.11563 m3 = 104.999 qt (US dry)
• 1 bbl(US liq) = 119.240 l = 1.03124 bbl(US dry) = 0.75 bbl(US oil) = 0.7286 bbl(UK) = 4.2109 ft3 = 7276.5 in3 = 0.11924 m3 = 26.22924 gal(UK) = 31.5 gal(US liq) = 3.3837 bu(US dry)
• 1 bbl(US fed) = 1 bbl(beer) = 117.35 l = 31 gal(US liq)
• 1 board ft = piece of lumber 1 ft x 1 ft x 1 in = 1/12 ft3 = 0.08333 ft3 = 144 in3 = 2359.74 cm3 = 2.3597 l
• 1 bucket (UK) = 4 gal(UK) = 16 qt(UK) = 32 pt(UK) = 4.8034 gal(US liq) = 4.1282 gal(US dry) = 0.6422 ft3 = 18.184 l = 0.018184.35 m3
• 1 bu = 1 bu(US dry) = 35.2391 l = 0.96894 bu(UK) = 0.30476 bbl (US dry) = 4 pk(US dry) = 8 gal(US dry) = 32 qt(US dry) = 64 pt (US dry) = 1.2445 ft3 = 2150.4 in3 = 0.04609 yd3 = 0.035239 m3
• 1 bu(UK) = 36.3687 l = 1.03206 bu(US dry) = 0.2222 bbl(UK) = 1.28435 ft3 = 2219 in3 = 8 gal(UK) = 32 qt(UK) = 64 pt(UK) = 0.036369 m3
• 1 bu(US dry) = 1 bu = 35.2391 l = 0.96894 bu(UK) = 0.30476 bbl (US dry) = 4 pk(US dry) = 8 gal(US dry) = 32 qt(US dry) = 64 pt (US dry) = 1.2445 ft3 = 2150.4 in3 = 0.04609 yd3 = 0.035239 m3
• 1 butt (UK liq) = 2 hhd = 108 gal(US dry) = 126 gal(US liq) = 4 bbl (US liq) = 13.5 bushel (US dry) = 16.80 ft3 = 0.47573 m3
• 1 c(US) = 1/16 gal(US) = 1/4 qt(US) = 1/2 pt(US) = 8 fl oz = 16 Tbsp = 48 tsp = 14.44 in3 = 236.6 cm3 = 0.2366 l
• 1 c(met) = 250 cm3 = 0.25 l = 15.26 in3
• 1 chaldron = 8 bbl(UK) = 36 bu(UK) = 144 pk(UK) = 288 gal(UK) = 1.30927 m3 = 1309.27 l = 46.2365 ft3 = 1.71247 yd3
• 1 cm3 = 1000 mm3 = 1 spice measure = 1/15 Tbsp = 0.06667 Tbsp = 0.2 tsp = 1x10-6 m3 = 0.001 l = 0.06102 in3 = 2.7496x10 -5 bu(UK) = 2.8378x10 -5 bu(US dry) = 3.5315x10 -5 ft3 = 0.06102 in3 = 1.308x10-6 yd3 = 0.28156 drachm (UK, liq) = 0.27051 dr(US liq) = 0.000220 gal(UK) = 0.000227 gal(US dry) = 0.000264 gal(US liq) = 0.007039 gi(UK)=  0.008454 gi(US liq) = 0.035195 fl oz(UK) = 0.033814 fl oz(US) = 0.00182 pt(US dry) = 0.00211 pt (US liq)
• 1 cord (firewood) = 4 ft x 8 ft x 4 ft = 128 ft3 = 8 cord ft (timber) = 3.6246 m3
• 1 cord ft (timber) = 0.125 cord (firewood) = 16 ft3 = 0.4531 m3
• 1 dm3 = 1 l = 10-3 m3 = 1000 cm3 = 1000 ml = 61.0237 in3 = 0.03532 ft3 = 1.308x10-3 yd3 = 0.2200 gal(UK) = 0.2642 gal(US liq) = 1.0567 qt(US liq) = 2.1134 pt(US liq)
• 1 fifth (US liq) = 1/5 gal(US) = 0.2 gal(US) = 0.8 qt(US liq) = 1.6 pt (US liq) = 25.6 fl oz(US) = 25.6 shot(US liq) = 17.067 jigger(US liq) = 0.75708 l = 46.2 in3
• 1 firkin(UK) = 1.20095 firkin(US dry) = 0.25 bbl(UK) = 1.125 bu(UK) = 9 gal(UK)  = 10.81 gal(US) = 72 pt(UK) = 40.91481 l = 1.44489 ft3
• 1 fl dr(UK) = 0.96076 dr(US) = 60 min(UK) = 1/8 fl oz = 0.125 fl oz(UK) = 0.1201 fl oz(US) =  0.025 gi(UK) =  0.00625 pt(UK) = 3.5516 ml = 0.21673 in3
• 1 fl dr(US) = 1.0408 dr(UK) = 60 min(US) = 0.125 fl oz (US) = 0.1301 fl oz (UK) = 0.03125 gi(US liq) = 0.0078125 pt (US liq) = 3.6967 cm3 = 3.6967 ml = 0.225586 in3
• 1 fl oz(UK) = 0.96076 fl oz(US) = 1/20 pt(UK) = 0.05 pt(UK) = 1/5 gi(UK) = 0.2 gi(UK)= 8 dr(UK) = 480 min(UK) = 0.02841 l = 28.413 cm3 = 1.7339 in3
• 1 fl oz(US) = 1.0408 fl oz(UK) = 1/16 pt(US) = 0.0625 pt(US liq) = 1/4 gi(US) = 0.25 gi(US liq)= 2 Tbsp(US) = 6 tsp = 8 dr(US) = 480 min(US) = 0.02957 l = 29.574 cm3 = 1.80469 in3
• 1 ft3 = 28316.8 cm3 = 28.317 l = 0.02832 m3 = 1727.9998 in3 = 0.037037 yd3 = 996.614 fl oz(UK) = 957.506 fl oz(US) = 49.8307 pt(UK) = 51.4281 pt(US dry) = 59.8442 pt(US liq) = 24.915 qt(UK) = 25.714 qt(US dry) = 29.922 qt(US liq)= 6.2288 gal(UK) = 7.4805 gal(US liq) = 6.4285 gal(US dry) = 2.296x10 -5 ac-ft = 12 board ft (timber) = 0.7786 bu(UK) = 0.8036 bu(US dry) = 0.00781 cord (firewood) = 0.0625 cord ft (timber)
• 1 gal(UK) = 4.5461 l = 1.0321 gal(US dry) = 1.2009 gal(US liq) = 1/8 bu(UK) = 0.125 bu(UK) = 0.5 pk(UK) = 4 qt(UK) = 8pt(UK) = 32 gi(UK) = 160 fl oz(UK) = 1280 fl dr(UK) = 4.5461x10-3 m3 = 0.1605 ft3 = 5.946x10-3 yd3
• 1 gal(US dry) = 4.4049 l = 0.9689gal(UK) = 1.1636 gal(US liq) = 1/8 bu(US) = 0.125 bu(US) = 0.5 pk(US) = 4 qt(US dry) = 8pt(US dry) = 32 gi(US dry) = 148.95 fl oz(US liq) = 1191.6 fl dr(US) = 4.4049x10-3 m3 = 0.1556 ft3 = 5.761x10-3 yd3
• 1 gal(US liq) = 3.7854 l = 0.8327 gal(UK) = 0.8594 gal(US dry) = 0.1074 bu(US dry) = 0.4297 pk(US dry) = 4 qt(US liq) = 8pt(US liq) = 16 c(US) = 32 gi(US liq) = 128 fl oz(US) = 1024 fl dr(US) = 3.7854x10-3 m3 = 0.1337 ft3 = 4.951x10-3 yd
• 1 gi(UK) = 0.14207 l = 1.2009 gi(US liq) = 1/8 qt(UK) = 0.125 qt(UK) = 1/4 pt(UK) = 5 fl oz(UK) = 40 fl dr(UK) = 2400 min(UK) = 8.6694 in3 = = 0.005017 ft3
• 1 gi(US liq) = 0.1183 l = 0.8327 gi(UK) = 1/8 qt(US liq) = 0.125 qt(US liq) = 1/4 pt(US liq) = 4 fl oz(US) = 32 fl dr(US) = 1920 min(US) = 7.2188 in3 = 0.004178 ft3
• 1 hhd = 238.48 l = 2 bbl(US liq) = 63 gal(US liq) = 252 qt(US liq) = 0.2385 m3 = 8.42184 ft3 = 0.3119 yd3
• 1 hhd(UK) = 238.67 l = 1.00079 hhd = 52.5 gal(UK) = 1.4583 bbl(UK) = 210 qt(UK) = 420 pt(UK) = 0.2387 m3 = 8.4285 ft3 = 0.3122 yd3
• 1 hl = 100 l = 0.1 m3 = 1x105 cm3 = 6102.4 in3 = 3.5315 ft3 = 0.1308 yd3 = 2.7496 bu(UK) = 2.8378 bushel (US dry) = 26.417 gal(US liq) = 3381.4 fl oz(US) = 11.351 pk(US)
• 1 in3 = 0.000579 ft3 = 2.143x10-5 yd3 = 1.6387x10 -5 m3 = 1.639x10-2 l = 16.39 cm3 = 16390 mm3 = 4.614 fl dr(UK) = 4.4329 fl dr(US) = 0.5767 fl oz(UK) = 0.5541 fl oz(US) = 1.0925 tbsp(met)
• 1 jigger(US) = 1.5 fl oz(US) = 44.36 ml = 2.7070 in3
• 1 km3 = 109 m3 = 10 12 l =0.2399 mi3 = 1.308x109 yd3
• 1 l = 1 dm3 = 10-3 m3 = 1000 cm3 = 1000 ml = 61.0237 in3 = 0.03532 ft3 = 1.308x10-3 yd3 = 0.2200 gal(UK) = 0.2642 gal(US liq) = 1.0567 qt(US liq) = 2.1134 pt(US liq)
• 1 m3 = 1x10-9 km3 = 1000 l = 1000 dm3 = 35.315 ft3 = 1.30795 yd3 = 219.97 gal(UK) = 264.172 gal(US liq) = 61023.7 in3 = 4.1932 hhd = 113.51 pk(US)
• 1 mi3 = 4.1682 km3 = 4.17x10 12 l = 5.452x109 yd3
• 1 min(UK) = 0.9607 min(US) = 1/60 fl dr(UK) = 0.016667 fl dr(UK) = 1/480 fl oz(UK) = 0.0020833 fl oz(UK) = 0.05919 cm3
• 1 min(US) = 1.04084 min(UK) = = 1/60 fl dr(US) = 0.016667 fl dr(UK) = 1/480 fl oz(US) = 0.0020833 fl oz(US) = 0.06161 cm3
• 1 pk(UK) = 1.0321 pk(US) = 1/4 bu(UK) = 2 gal(UK) = 8 qt(UK) = 16 pt(UK) = 64 gi(UK) = 0.009092 m3 = 9.0922 l = 0.3211 ft3 =0.01189 yd3 = 554.73 in3
• 1 pk(US) = 0.9689 pk(UK) = 1/4 bu(US) = 2 gal(US dry) = 8 qt(US dry) = 16 pt(US dry) = 74.47 gi(US liq) = 0.008810 m3 =8.8098 l = 0.3111 ft3 =0.01152 yd3 = 537.61 in3
• 1 pt(UK) = 1.0321 pt(US dry) = 1.2009 pt(US liq) = 1/16 pk(UK) = 0.0625 pk(UK) = 1/8 gal(UK) = 0.125 gal(UK) = 0.5 qt(UK) = 4 gi(UK) = 20 fl oz(UK) = 0.5683 l = 0.02007 ft3 = 34.677 in3
• 1 pt(US dry) = 0.9689 pt(UK) = 1.1636 pt(US liq) = 1/16 pk(US) = 0.0625 pk(US) = 1/8 gal(US dry) = 0.125 gal(US dry) = 0.5 qt(US dry) = 4.6546 gi(US liq) = 18.618 fl oz(US) = 0.5506 l = 0.01944 ft3 = 33.6003 in3
• 1 pt(US liq) = 0.8327 pt(UK) = 0.8594 pt(US liq) = 0.05371 pk(US) = 1/8 gal(US liq) = 0.125 gal(US liq) = 0.5 qt(US liq) = 4.6546 gi(US liq) = 16 fl oz(US) = 0.4732 l = 0.01671 ft3 = 28.875 in 3
• 1 qt(UK) = 1.0321 qt(US dry) = 1.2009 qt(US liq) = 0.125 pk(UK) = 1/4 gal(UK) = 2 pt(UK) = 8 gi(UK) = 40 fl oz(UK) = 320 fl dr(UK) = 1.1365 l = 0.04014 ft3 = 69.3549 in3
• 1 qt(US dry) =0.9689 qt(UK) = 1.1636 qt(US liq) = 0.125 pk(US) = 1/4 gal(US dry) = 2 pt(US dry) = 9.309 gi(US liq) = 37.2367 fl oz(US) = 297.8937 fl dr(US) = 1.1012 l = 0.03889 ft3 = 67.2006 in3
• 1 qt(US liq) = 0.8327 qt(UK) = 0.8594 qt(US liq) = 0.1074 pk(US) = 1/4 gal(US liq) = 2 pt(US liq) = 8 gi(US liq) = 32 fl oz(US) = 256 fl dr(US) = 0.9464 l = 0.03342 ft3 = 57.75 in3
• 1 Tbsp(met) = 1.0144 Tbsp(US) = 3 tsp(met) = 15 cm3 = 0.9153 in3
• 1 Tbsp(US) = 0.9868 Tbsp(met) = 1/8 gi(US liq) = 0.125 gi(US liq) = 0.5 fl oz(US) = 3 tsp(US) = 4 fl dr(US) = 14.7868 cm3 = 0.9023 in3
• 1 tsp (met) = 1.0144 tsp(US) = 1/3 Tbsp(met) = 5 cm3 = 0.3051 in3
• 1 tsp(US) = 0.9858 tsp(met) = 1/3 Tbsp(US) = 1/6 fl oz(US) = 0.16667 fl oz(US) = 1 1 /3 fl dr(US) = 1.3333 fl dr(US) = 80 min(US) = 4.9289 cm3 = 0.3008 in3
• 1 yd3 = 27 ft3 = 4.6656x104 in3 = 0.7646 m3 = 764.6 l  = 168.18 gal(UK) = 201.97 gal(US liq) = 1616 pt(US liq) = 807.9 qt(US liq)

### Volume Flow

barrel/day [bbl/d], barrel of oil/day [bo/d]=[bbl(oil)/d], cubic centimetre/second [cm3 /s], cubic decimetre/hour [dm3 /h]=liter/hour [l/h], cubic decimetre/minute [dm3 /min]=liter/minute [l/min], cubic decimetre/second [dm3 /s]=liter/second [l/s], cubic foot/minute [ft3 /min]=[cfm], cubic foot/second [ft3 /s], cubic inch/second [in3 /s], cubic metre/hour [m3 /h], cubic inch/minute [in3 /min], cubic metre/second [m3 /s], cubic yard/hour [yd3 /h], cubic yard/minute [yd3 /min], gallon/day [gal/d], gallon/hour [gal/h], gallon/minute [gal/min], pint/second [pt/s], quart/second [qt/s]

Abbreviations for areas of use: UK= United Kingdom = Imperical     US= United States of America   dry= dry volumes   liq= liquid volumes

• 1 bbl(US liq)/d = 119.24 l/d = 1.3801 cm3 /s = 0.75 bo/d = 31.5 gal(US liq)/d = 0.1754 ft3 /h = 5.0531 in3 /min
• 1 bo/d = 158.99 l/d = 0.006624 m3 /h = 1.8401 cm3 /s = 42 gal(US liq)/d = 5.61458 ft3 /d = 6.7375 in3 /min
• 1 cfm = 1 ft3 /min = 1728 in3 /min = 28.8 in3 /s = 0.03704 yd3 /min = 2.222 yd3 /h = 4.720x10-4 m3 /s = 1.699 m3 /h = 0.4719 l/s = 6.2288 gal(UK)/min = 7.4805 gal(US liq)/min = 0.9974 pt(US liq)/s
• 1 cm3 /s = 1x10-6 m3 /s = 3.6 l/h = 3.6614 in3 /min = 0.9510 gal(US liq)/h = 0.724 bbl(US liq)/d = 0.00211 pt(US liq)/s
• 1 dm3 /h = 1 l/h = 2.7778x10 -7 m3 /s = 0.27778 cm3 /s = 9.810x10-6 ft3 /s = 1.0171 in3 /min = 0.2013 bbl(US liq)/d = 0.2642 gal(US liq)/h
• 1 dm3/min = 1 l/min = 1.6667x10 -5 m3 /s = 60000 cm3 /h = 1.017 in3 /s = 5.886x10-4 ft3 /s = 15.85 gal(US liq)/h = 12.076 bbl(US liq)/d
• 1 dm3 /s = 1 l/s = 60 l/min = 3600 l/h = 0.001 m3 /s = 3.6 m3 /h = 1000 cm3 /s = 0.03532 ft3 /s = 2.1189 ft3 /min = 61.024 in3/s = 13.198 gal(UK)/min = 15.850 gal(US liq)/min = 792 gal(UK)/h
• 1 ft3 /min = 1 cfm = 1728 in3 /min = 28.8 in3 /s = 0.03704 yd3 /min = 2.222 yd3 /h = 4.720x10-4 m3 /s = 1.699 m3 /h = 0.4719 l/s = 6.2288 gal(UK)/min = 7.4805 gal(US liq)/min = 0.9974 pt(US liq)/s
• 1 ft3 /s = 60 ft3 /min = 2.2222 yd3 /min = 1.037x105 in3 /min = 0.0283168 m3 /s = 101.94 m3 /h = 28.3168 l/s  = 373.73 gal(UK)/min = 448.83 gal(US)/min = 59.8442 pt(US liq)/s
• 1 gal(US liq)/d = = 0.8327 gal(UK)/d = 0.03175 bbl(US liq)/d = 9.259x10 -5 pt(US liq)/s = 4.3813x10-8 m3/s = 2.6288 cm3 /min = 0.1604 in3 /min
• 1 gal(US liq)/h = 0.8327 gal(UK)/h = 1.0515x10-6 m3 /s = 0.003785 m3 /h = 0.001051 l/s = 3.713x10 -5 ft3 /s = 0.002228 ft3 /min = 3.85 in3 /min = 0.002222 pt(US liq)/s = 0.0009549 qt(US dry)/s
• 1 gal(UK)/h =1.2009 gal(US liq) = 1.263x10-6 m3 /s = 4.459x10 -5 ft3 /s = 0.002676 ft3 /min = 4.624 in3 /min
• 1 gal(US liq)/min = 0.8327 gal(UK)/min = 6.3090x10 -5 m3 /s = 0.2271 m3 /h = 0.06309 l/s = 2.228x10-3 ft3 /s = 0.1337 ft3 /min = 1.201 gal (US)/min
• 1 in3/min = 0.03472 ft3 /h = 2.143x10 -5 yd3 /min = 0.2731 cm3 /s = 9.832x10-4 m3/h = 2.731x10-4 l/s  = 0.2162 gal(UK)/h = 0.2597 gal(US)/min = 5.772x10-4 pt(US liq)/s
• 1 in3 /s = 60 in3 /min = 0.03472 ft3 /min = 0.07716 yd3 /h = 16.3871 cm3 /s = 58.993 l/h = 1.639x10-5 m3 /s = 0.2597 gal(US liq)/min
• 1 l/h = 1 dm3 /h = 2.7778x10 -7 m3 /s = 0.27778 cm3 /s = 9.810x10-6 ft3 /s = 1.0171 in3 /min = 0.2013 bbl(US liq)/d = 0.2642 gal(US liq)/h
• 1 l/min = 1dm3/min = 1.6667x10 -5 m3 /s = 60000 cm3 /h = 1.017 in3 /s = 5.886x10-4 ft3 /s = 15.85 gal(US liq)/h = 12.076 bbl(US liq)/d
• 1 l/s = 1 dm3 /s = 60 l/min = 3600 l/h = 0.001 m3 /s = 3.6 m3 /h = 1000 cm3 /s = 0.03532 ft3 /s = 2.1189 ft3 /min = 61.024 in3/s = 13.198 gal(UK)/min = 15.850 gal(US liq)/min = 792 gal(UK)/h
• 1 m3 /h = 2.7778x10-4 m3 /s = 1000 l/h = 16.667 l/min = 0.27778 l/s = 277.78 cm3 /s =  9.810x10-3 ft3 /s = 0.5886 ft3 /min = 3.666 gal (UK)/min = 4.403 gal(US liq)/min = 0.5871 pt(US liq)/s
• 1 m3 /s = 3600 m3 /h = 1000 l/s = 35.32 ft3 /s = 2118.9 ft3 /min = 13198 gal(UK)/min = 15850 gal(US liq)/min = 791891 gal(UK)/h = 908.08 qt(US dry)/s
• 1 pt(US liq)/s = 7.5 gal(US liq)/min = 0.4296 qt(US dry)/s =4.732x10-4 m3/s = 473.18 cm3 /s = 1703.4 l/h = 28.875 in3 /s
• 1 qt(US dry)/s = 2.327 pt(US liq)/s = 17.455 gal(US liq)/min = 1.101 l/s = 0.03889 ft3 /s = 5.1852 yd3 /h = 67.20 in3 /s
• 1 yd3 /h = 0.45 ft3 /min = 12.96 in3 /s = 0.0002124 m3 /s = 764.55 l/h = 212.4 cm3 /s = 153.88 bbl(US liq)/d = 3.366 gal(US liq)/min = 0.4488 pt(US liq)/s
• 1 yd3 /min = 27 ft3 /min = 777.6 in3 /s = 0.01274 m3 /s = 45873 l/h = 12742 cm3 /s = 7688 bbl(US liq)/d = 9233 gal(US liq)/min = 26.9299 pt(US liq)/s

### Volume per unit length

• 1 gal(US)/ft = 12.4 liter/m

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