Engineering ToolBox - Resources, Tools and Basic Information for Engineering and Design of Technical Applications!

This is an AMP page - Open full page! for all features.

• the most efficient way to navigate the Engineering ToolBox!

# Water - Dynamic (Absolute) and Kinematic Viscosity vs. Temperature and Pressure

The viscosity of a fluid is a measure of its resistance to gradual deformation by shear stress or tensile stress.

For further definitions, go to Absolute (dynamic) and kinematic viscosityAbsolute or dynamic viscosity is used to calculate Reynold's Number to determine if a fluid flow is laminar, transient or turbulent.

### Online Water Viscosity Calculator

The calculator below can be used to calculate the liquid water dynamic or kinematic viscosity at given temperatures.
The output dynamic viscosity is given as cP, mPa*s, Pa*s, N*s/m2,lbf*s/ft2 and lbm/(ft*h),
while the kinematic viscosity is given as cSt, m2/s, and ft2/s

Note! Temperature must be within the ranges 0-370 °C, 32-700 °F, 273-645 K and 492-1160 °R to get valid values.

Choose the actual unit of temperature:

See Water and Heavy Water - thermodynamic properties.

The figures and tables below shows how water viscosity changes with temperature (°C and °F) at water saturation pressure (which for practicle use, gives the same result as atmospheric pressure at temperatures < 100 °C (212°F)). One figure showing relative viscosity with variations in pressure and temperature is also included.

 Temperature Pressure Dynamic viscosity Kinematic viscosity [°C] [MPa] [Pa s], [N s/m2] [cP], [mPa s] [lbf s/ft2 *10-5] [m2/s*10-6], [cSt]) 0.01 0.000612 0.0017914 1.79140 3.7414 1.7918 10 0.0012 0.0013060 1.30600 2.7276 1.3065 20 0.0023 0.0010016 1.00160 2.0919 1.0035 25 0.0032 0.0008900 0.89004 1.8589 0.8927 30 0.0042 0.0007972 0.79722 1.6650 0.8007 40 0.0074 0.0006527 0.65272 1.3632 0.6579 50 0.0124 0.0005465 0.54650 1.1414 0.5531 60 0.0199 0.0004660 0.46602 0.9733 0.4740 70 0.0312 0.0004035 0.40353 0.8428 0.4127 80 0.0474 0.0003540 0.35404 0.7394 0.3643 90 0.0702 0.0003142 0.31417 0.6562 0.3255 100 0.101 0.0002816 0.28158 0.5881 0.2938 110 0.143 0.0002546 0.25461 0.5318 0.2677 120 0.199 0.0002320 0.23203 0.4846 0.2460 140 0.362 0.0001966 0.19664 0.4107 0.2123 160 0.618 0.0001704 0.17043 0.3559 0.1878 180 1.00 0.0001504 0.15038 0.3141 0.1695 200 1.55 0.0001346 0.13458 0.2811 0.1556 220 2.32 0.0001218 0.12177 0.2543 0.1449 240 3.35 0.0001111 0.11106 0.2320 0.1365 260 4.69 0.0001018 0.10181 0.2126 0.1299 280 6.42 0.0000936 0.09355 0.1954 0.1247 300 8.59 0.0000859 0.08586 0.1793 0.1206 320 11.3 0.0000783 0.07831 0.1636 0.1174 340 14.6 0.0000703 0.07033 0.1469 0.1152 360 18.7 0.0000603 0.06031 0.1260 0.1143
 Temperature Pressure Dynamic viscosity Kinematic viscosity [°F] [psi] [lbf s/ft2 *10-5] [lbm/(ft h)] [cP], [mPa s] [ft2/s*10-5] 32.02 0.9506 3.7414 4.3336 1.7914 1.9287 34 0.0962 3.6047 4.1752 1.7259 1.8579 39.2 0.1180 3.2801 3.7992 1.5705 1.6906 40 0.1217 3.2340 3.7458 1.5484 1.6668 50 0.1781 2.7276 3.1593 1.3060 1.4063 60 0.2563 2.3405 2.7109 1.1206 1.2075 70 0.3634 2.0337 2.3556 0.9737 1.0503 80 0.5076 1.7888 2.0719 0.8565 0.9250 90 0.6992 1.5896 1.8411 0.7611 0.8234 100 0.9506 1.4243 1.6497 0.6820 0.7392 110 1.277 1.2847 1.4880 0.6151 0.6682 120 1.695 1.1652 1.3496 0.5579 0.6075 130 2.226 1.0620 1.2300 0.5085 0.5551 140 2.893 0.9733 1.1273 0.4660 0.5102 150 3.723 0.8950 1.0366 0.4285 0.4706 160 4.747 0.8279 0.9589 0.3964 0.4367 170 6.000 0.7698 0.8916 0.3686 0.4074 180 7.520 0.7192 0.8330 0.3444 0.3820 190 9.349 0.6745 0.7813 0.3230 0.3596 200 11.537 0.6300 0.7297 0.3016 0.3371 212 14.710 0.5881 0.6812 0.2816 0.3163 220 17.203 0.5619 0.6508 0.2690 0.3032 240 25.001 0.5050 0.5850 0.2418 0.2750 260 35.263 0.4575 0.5299 0.2191 0.2515 280 49.286 0.4176 0.4837 0.2000 0.2320 300 67.264 0.3840 0.4448 0.1839 0.2157 350 134.73 0.3202 0.3708 0.1533 0.1853 400 247.01 0.2750 0.3185 0.1317 0.1648 450 422.32 0.2404 0.2785 0.1151 0.1504 500 680.56 0.2126 0.2463 0.1018 0.1398 550 1045.0 0.1888 0.2187 0.0904 0.1322 600 1542.1 0.1673 0.1937 0.0801 0.1270 625 1851.2 0.1562 0.1809 0.0748 0.1252 650 2207.8 0.1438 0.1666 0.0689 0.1239 675 2618.7 0.1292 0.1496 0.0619 0.1230

### Unit conversion

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)], reyn [reyn]

• 1 cP = 0.001 Pa s = 0.01 P = = 0.01 g/(cm sec) = 6.72197x10-4 lb/(ft s) = 2.4191 lb/(ft h)
• 1 lb/(ft h) = 0.00027778 lb/(ft s) = 0.00041338 Pa s = 0.0041338 P = 0.41338 cP
• 1 lb/(ft s) = 3600 lb/(ft h) = 1.48816 Pa s = 14.8816 P = 1488.16 cP
• 1 kg/(m s ) = 1 (N s)/m2 = 1 Pa s = 10 P = 1000 cP = 0.672197 lb/(ft s) = 2419.09 lb/(ft h)
• 1 (N s)/m2 = 1 kg/(m s ) = 1 Pa s = 10 P = 1000 cP = 0.672197 lb/(ft s) = 2419.09 lb/(ft h)
• 1 P = 1 g/(cm s) = 0.1 Pa s = 100 cP = 0.067197 lb/(ft s) = 241.909 lb/(ft h)
• 1 Pa s = 1 kg/(m s) = 1 (N s)/m2 = 10 P = 1000 cP = 0.672197 lb/(ft s) = 2419.08 lb/(ft h) =  0.00014504 reyn
• 1 reyn = 6894.76 Pa s

Viscosity Kinematic
centistoke [cSt] = square millimetre/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

### Related Mobile Apps from The Engineering ToolBox

- free apps for offline use on mobile devices.

## Related Topics

### • Fluid Mechanics

The study of fluids - liquids and gases. Involving velocity, pressure, density and temperature as functions of space and time.

### • Material Properties

Material properties of gases, fluids and solids - densities, specific heats, viscosities and more.

### • Steam and Condensate

Steam & condensate systems- properties, capacities, pipe sizing, systems configuration and more.

### • Viscosities

Viscosities of products and chemical species at varying conditions.

### • Water Systems

Hot and cold water service systems - design properties, capacities, sizing and more.

## Related Documents

### Absolute or Dynamic Viscosity Online Converter

Convert between dynamic or absolute viscosity units - Poiseuille, Poise, centPoise and more.

### Benzene - Dynamic and Kinematic Viscosity vs. Temperature and Pressure

Online calculator, figures and table showing dynamic and kinematic viscosity of benzene, C6H6, at varying temperature and pressure - Imperial and SI Units.

### Butane - Dynamic and Kinematic Viscosity vs. Temperature and Pressure

Online calculators, figures and tables with dynamic and kinematic viscosity of liquid and gaseous butane, C4H10, at varying temperarure and pressure, SI and Imperial units.

### Dynamic (Absolute) Viscosity - Converting Chart

Convert dynamic viscosity values between units like Poiseuille - Poise - centiPoise and more.

### Ethanol - Dynamic and Kinematic Viscosity vs. Temperature and Pressure

Online calculator, figures and tables showing dynamic and kinematic viscosity of ethanol, C2H5OH, at varying temperature and pressure - Imperial and SI Units.

### Ethylene - Dynamic and Kinematic Viscosity vs. Temperature and Pressure

Online calculator, figures and tables showing dynamic and kinematic viscosity of ethylene, C2H4, also called ethene or acetene, at varying temperature and pressure - Imperial and SI Units.

### Gases Solved in Water - Diffusion Coefficients

Diffusion flux [kg/m2s] tells how fast a substanse solved in another substance flows due to concentration gradients. Diffusion constants [m2/s] for several gases in water.

### Heavy Water - Thermophysical Properties

Thermodynamic properties of heavy water (D2O) like density, melting temperature, boiling temperature, latent heat of fusion, latent heat of evaporation, critical temperature and more.

### Ice and Water - Melting Points vs. Pressure

Online calculator, figures and tables with melting points of ice to water at pressures ranging from 0 to 29000 psia (0 to 2000 bara). Temperature given as °C, °F, K and °R.

### Kinematic Viscosity - Convert between Units

Convert between Centistokes, Saybolt and Redwood seconds.

### Kinematic Viscosity - Online Converter

Convert between kinematic viscosity units like centistokes, poise, lentor and more.

### Methane - Dynamic and Kinematic Viscosity vs. Temperature and Pressure

Online calculator, figures and tables showing dynamic and kinematic viscosity of methane, CH4, at varying temperature and pressure - Imperial and SI Units.

### Methanol - Dynamic and Kinematic Viscosity vs. Temperature and Pressure

Online calculator, figures and tables showing dynamic and kinematic viscosity of liquid methanol,CH3OH, at varying temperature - Imperial and SI Units.

### Oxygen - Dynamic and Kinematic Viscosity vs. Temperature and Pressure

Online calculator, figures and tables showing dynamic and kinematic viscosity of oxygen, O2, at varying temperature and pressure - Imperial and SI Units.

### Propane - Dynamic and Kinematic Viscosity vs. Temperature and Pressure

Online calculators, figures and tables showing dynamic and kinematic viscosity of liquid and gaseous propane at varying temperarure and pressure, SI and Imperial units.

### Sewage Sludge - Viscosities

Viscosity of sewage sludge vs. content of solids.

### Steel Pipes - Friction Loss vs. Viscous Liquid Flow

Friction loss in schedule 40 steel pipe with viscous liquids - viscosities ranging from water to oil.

### Sugar Water Solutions - Viscosities

Dynamic viscosities of sucrose water solutions vs. temperature.

### Viscosity - Absolute (Dynamic) vs. Kinematic

Vicosity is a fluid's resistance to flow and can be valued as dynamic (absolute) or kinematic.

### Viscosity - Converting Chart

Convert between viscosity units like Centiposes, milliPascal, CentiStokes and SSU.

### Viscous Liquids - Friction Loss vs. Viscosity and Flow

Friction loss in steel pipes for fluids with viscosities ranging 32 - 80000 SSU.

### Water - Absolute (Dynamic) Viscosity vs. Temperature and Pressure

Absolute viscosity for water in centipoises for temperatures between 32 - 200oF.

### Water - Boiling Points at Vacuum Pressure

Online calculator, figures and tables giving the boiling temperatures of water in varying vacuum, SI and Imperial units.

### Water - Density, Specific Weight and Thermal Expansion Coefficients

Definitions, online calculator and figures and tables with water properties like density, specific weight and thermal expansion coefficient of liquid water at temperatures ranging 0 to 360°C (32 to 680°F).

### Water - Enthalpy and Entropy vs. Temperature

Figures and tables showing the enthalpy and entropy of liquid water as function of temperature - SI and Imperial Units.

### Water - Heat of Vaporization vs. Temperature

Online calculator, figures and tables showing heat of vaporization of water, at temperatures from 0 - 370 °C (32 - 700 °F) - SI and Imperial units.

### Water - Ionization Constant, pKw, of Normal and Heavy Water

Ionization constant (= dissociation constant = self-ionization constant = ion product = autoprotolysis constant ) of water and heavy water, given as function of temperature (°C and °F) in figures and tables.

### Water - Properties at Gas-Liquid Equilibrium Conditions

Figures and tables showing how the properties of water changes along the boiling/condensation curve (vapor pressure, density, viscosity, thermal conductivity, specific heat, Prandtl number, thermal diffusivity, entropy and enthalpy).

### Water - Saturation Pressure vs. Temperature

Online calculator, figures and tables with water saturation (vapor) pressure at temperatures ranging 0 to 370 °C (32 to 700°F) - in Imperial and SI Units.

### Water - Specific Heat vs. Temperature

Online calculator, figures and tables showing specific heat of liquid water at constant volume or constant pressure at temperatures from 0 to 360 °C (32-700 °F) - SI and Imperial units.

### Water - Specific Volume vs. Temperature

Online calculator, figures and tables showing Specific Volume of water at temperatures ranging from 0-370 °C and 32 - 700 °F - Imperial and IS Units.

### Water - Thermal Conductivity vs. Temperature

Figures and tables showing thermal conductivity of water (liquid and gas phase) with varying temperature and pressure, SI and Imperial units.

### Water - Thermal Diffusivity vs. Temperature and Pressure

Figures and tables with thermal diffusivity of liquids and gaseous water at varying temperarures and pressures - SI and Imperial units.

### Water vs. Steam - Critical and Triple Points

Critical point is where vapor and liquid are indistinguishable and triple point is where ice, water and vapor coexist in thermodynamic equilibrium.

## Search Engineering ToolBox

• the most efficient way to navigate the Engineering ToolBox!

## SketchUp Extension - Online 3D modeling!

Add standard and customized parametric components - like flange beams, lumbers, piping, stairs and more - to your Sketchup model with the Engineering ToolBox - SketchUp Extension - enabled for use with the amazing, fun and free SketchUp Make and SketchUp Pro . Add the Engineering ToolBox extension to your SketchUp from the Sketchup Extension Warehouse!