Kinematic Viscosity Converter — m²/s, Stokes & Centistokes

Convert between square meters per second, stokes, centistokes, and square feet per second.

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How this conversion works. Every unit is converted through m²/s (SI) with exact factors from NIST Special Publication 811.

How to use

  1. Pick the unit you are converting from, such as Square meter per second (m²/s) or Square centimeter per second / Stokes (St).
  2. Type the value and every other unit updates as you type.
  3. Copy the figure you need, or use the swap button to reverse the direction, Square inch per second (in²/s) included.

Frequently asked questions

How do I convert centistokes to square meter per second?

1 centistokes = 1.0000e-6 square meter per second. Choose "Centistokes (cSt)" as From and "Square meter per second (m²/s)" as To, type a value, and the result updates instantly.

What is the relation between cSt and mm²/s?

They are identical: 1 cSt = 1 mm²/s exactly. ISO viscosity grades (ISO VG 46, etc.) quote mm²/s at 40 °C, which equals the cSt value.

How do I get kinematic from dynamic viscosity?

Divide dynamic viscosity by density: ν = µ/ρ. Water at 20 °C: 1.002 mPa·s ÷ 998.2 kg/m³ ≈ 1.004 cSt.

Is my data sent to a server?

No. Conversions run entirely in your browser using fixed factors — nothing is uploaded or logged.

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