Pressure Units - Online Converter
Pressure Converter
The calculator below can be used to convert between some common pressure units
Value (use period as decimal point)
Pa (N/m^{2})
kPa
bar
atmosphere
mm Hg
mm H_{2}O
m H_{2}O
kg_{f}/m^{2}
kg_{f}/cm^{2}
pound square feet (psf)
pound square inches (psi)
inches Hg
inches H_{2}O
ft H_{2}O
Pressure Converting Tables
The tables below can be used to convert between some common pressure units:
For full table - rotate the screen!
Multiply by | |||||||
Convert from | Convert to | ||||||
Pa (N/m^{2}) | bar | atmosphere | mm Hg | mm H_{2}O | m H_{2}O | kg/cm^{2} | |
Pa (N/m^{2}) | 1 | 10^{-5} | 9.87 10^{-6} | 0.0075 | 0.1 | 10^{-4} | 1.02 10^{-5} |
bar | 10^{5} | 1 | 0.987 | 750 | 1.0197 10^{4} | 10.197 | 1.0197 |
atmosphere | 1.01 10^{5} | 1.013 | 1 | 759.9 | 10332 | 10.332 | 1.03 |
mm Hg | 133.3 | 1.33 10^{-3} | 1.32 10^{-3} | 1 | 13.3 | 0.013 | 1.36 10^{-3} |
mm H_{2}O | 10 | 0.000097 | 9.87 10^{-5} | 0.075 | 1 | 0.001 | 1.02 10^{-4} |
m H_{2}O | 10^{4} | 0.097 | 9.87 10^{-2} | 75 | 1000 | 1 | 0.102 |
kg/cm^{2} | 9.8 10^{4} | 0.98 | 0.97 | 735 | 10000 | 10 | 1 |
pound square feet | 47.8 | 4.78 10^{-4} | 4.72 10^{-4} | 0.36 | 4.78 | 4.78 10^{-3} | 4.88 10^{-4} |
pound square inches (psi) | 6894.76 | 0.069 | 0.068 | 51.7 | 689.7 | 0.690 | 0.07 |
inches Hg | 3377 | 0.0338 | 0.033 | 25.4 | 337.7 | 0.337 | 0.034 |
inches H_{2}O | 248.8 | 2.49 10^{-3} | 2.46 10^{-3} | 1.87 | 25.4 | 0.0254 | 0.0025 |
For full table - rotate the screen!
Multiply by | ||||
Convert from | Convert to | |||
pound square feet | pound square inches (psi) | inches Hg | inches H_{2}O | |
Pa (N/m^{2}) | 0.021 | 1.450326 10^{-4} | 2.96 10^{-4} | 4.02 10^{-3} |
bar | 2090 | 14.50 | 29.61 | 402 |
atmosphere | 2117.5 | 14.69 | 29.92 | 407 |
mm Hg | 2.79 | 0.019 | 0.039 | 0.54 |
mm H_{2}O | 0.209 | 1.45 10^{-3} | 2.96 10^{-3} | 0.04 |
m H_{2}O | 209 | 1.45 | 2.96 | 40.2 |
kg/cm^{2} | 2049 | 14.21 | 29.03 | 394 |
pound square feet (psf) | 1 | 0.0069 | 0.014 | 0.19 |
pound square inches (psi) | 144 | 1 | 2.04 | 27.7 |
inches Hg | 70.8 | 0.49 | 1 | 13.57 |
inches H_{2}O | 5.2 | 0.036 | 0.074 | 1 |
- 1 Torr = 1 mm Hg
Note! - pressure is "force per unit area" and commonly used pressure units like kg/cm^{2} and similar are in principle not correct since kg is a mass unit. Mass must be multiplied with gravity g to be a force (weight).
Example - Convert from 10 psi to Pa
From the table above - to convert from psi, multiply psi with 6894.76:
10 (psi) = 6894.76 10 (Pa) = 68947.6 Pa = 68.95 kPa
Some other Pressure Units
1 Pa (N/m^{2}) = 0.0000102 Atmosphere (metric)
1 Pa (N/m^{2}) = 0.0000099 Atmosphere (standard)
1 Pa (N/m^{2}) = 0.00001 Bar
1 Pa (N/m^{2}) = 10 Barad
1 Pa (N/m^{2}) = 10 Barye
1 Pa (N/m^{2}) = 0.0007501 Centimeter of mercury (0 C)
1 Pa (N/m^{2}) = 0.0101974 Centimeter of water (4 C)
1 Pa (N/m^{2}) = 10 Dyne/square centimeter
1 Pa (N/m^{2}) = 0.0003346 Foot of water (4 C)
1 Pa (N/m^{2}) = 10^{-9} Gigapascal
1 Pa (N/m^{2}) = 0.01 Hectopascal
1 Pa (N/m^{2}) = 0.0002953 Inch of mercury (0 C)
1 Pa (N/m^{2}) = 0.0002961 Inch of mercury (15.56 C)
1 Pa (N/m^{2}) = 0.0040186 Inch of water (15.56 C)
1 Pa (N/m^{2}) = 0.0040147 Inch of water (4 C)
1 Pa (N/m^{2}) = 0.0000102 Kilogram force/centimetre^{2}
1 Pa (N/m^{2}) = 0.0010197 Kilogram force/decimetre^{2}
1 Pa (N/m^{2}) = 0.101972 Kilogram force/meter^{2}
1 Pa (N/m^{2}) = 10^{-7} Kilogram force/millimeter^{2}
1 Pa (N/m^{2}) = 10^{-3} Kilopascal
1 Pa (N/m^{2}) = 10^{-7} Kilopound force/square inch
1 Pa (N/m^{2}) = 10^{-6} Megapascal
1 Pa (N/m^{2}) = 0.000102 Meter of water (4 C)
1 Pa (N/m^{2}) = 10 Microbar (barye, barrie)
1 Pa (N/m^{2}) = 7.50062 Micron of mercury (millitorr)
1 Pa (N/m^{2}) = 0.01 Millibar
1 Pa (N/m^{2}) = 0.0075006 Millimeter of mercury (0 C)
1 Pa (N/m^{2}) = 0.10207 Millimeter of water (15.56 C)
1 Pa (N/m^{2}) = 0.10197 Millimeter of water (4 C)
1 Pa (N/m^{2}) =7.5006 Millitorr
1 Pa (N/m^{2}) = 1 Newton/square meter
1 Pa (N/m^{2}) = 32.1507 Ounce force (avdp)/square inch
1 Pa (N/m^{2}) = 0.0208854 Pound force/square foot
1 Pa (N/m^{2}) = 0.000145 Pound force/square inch
1 Pa (N/m^{2}) = 0.671969 Poundal/square foot
1 Pa (N/m^{2}) = 0.0046665 Poundal/square inch
1 Pa (N/m^{2}) = 0.0000099 Standard atmosphere
1 Pa (N/m^{2}) = 0.0000093 Ton (long)/foot^{2}
1 Pa (N/m^{2}) = 10^{-7} Ton (long)/inch^{2}
1 Pa (N/m^{2}) = 0.0000104 Ton (short)/foot^{2}
1 Pa (N/m^{2}) = 0.64 10^{-7} Ton/inch^{2}
1 Pa (N/m^{2}) = 0.0075006 Torr
psi to bar Nomogram
Download and print psi to bar Converter!
psi to kPa Nomogram
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