Kinematic Viscosity Converter

Convert kinematic viscosity values among common SI, metric and customary units. Kinematic viscosity is dynamic viscosity divided by density. One centistokes equals one mm²/s.

ValueEnter zero or a positive value; scientific notation is accepted.Convert fromSquare meter per second (m²/s)Square millimeter per second (mm²/s)Centistokes (cSt)Stokes (St)Square foot per second (ft²/s)Square foot per hour (ft²/h)Convert toSquare meter per second (m²/s)Square millimeter per second (mm²/s)Centistokes (cSt)Stokes (St)Square foot per second (ft²/s)Square foot per hour (ft²/h)

Convert

Converted value0.001076391042 ft²/s

SI-base value0.0001 m²/s

Multiply by0.00001076391042

The displayed results apply to the default example. Enable JavaScript to convert other values.

How to use this converter

1. Enter the kinematic viscosity value.
2. Select its current unit and the unit you want.
3. Select Convert. The page shows the converted value, the SI-base value and the direct multiplication factor.

Conversion formula

Converted value = entered value × source-to-SI factor ÷ target-to-SI factor.

Every option is represented by its factor to square meter per second (m²/s). This one-base method keeps reciprocal conversions consistent. Calculations run in your browser, and old results are hidden when an input changes or validation fails.

Worked example

Convert 100 cSt to ft²/s. Multiply by 0.00001076391042; the result is 0.001076391042 ft²/s. The same input equals 0.0001 m²/s in the SI-base unit.

Accuracy and limitations

Do not convert between dynamic and kinematic viscosity without the fluid density at the same temperature and pressure.

The calculator retains more digits internally than it displays. Round the final value to the precision supported by your measurement. Very large and very small answers may use scientific notation.

Frequently asked questions

How is kinematic viscosity different from dynamic viscosity?

Kinematic viscosity accounts for density; it equals dynamic viscosity divided by mass density.

Can I reverse the conversion?

Yes. Swap the From and To selections. Because both units use the same SI base, the reverse factor is the reciprocal of the forward factor.

Why was my entry rejected?

Use digits with an optional decimal point or scientific notation. Blank values, commas, fractions, words and non-finite entries are rejected. Negative values are rejected because this converter treats the quantity as a magnitude.

Review notes and sources

Reviewed October 4, 2026. The conversion factors, default example, zero or signed boundary behavior, invalid-input handling and recovery after an error were checked. Factors follow SI definitions and published conversion guidance from the NIST Guide to the SI and the BIPM SI Brochure. Explanations and examples are original.

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