Kinematic Viscosity Converter
Convert kinematic viscosity between centistokes (cSt), mm²/s, stokes, m²/s, ft²/s and in²/s.
Convert kinematic viscosity
Result
Kinematic Viscosity units
Every unit below converts to every other one in the calculator. Values are relative to the base unit, the square meter per second (m²/s).
| Unit | Symbol | System | Value |
|---|---|---|---|
| Square meter per second | m²/s | SI | Base unit |
| Square millimeter per second | mm²/s | SI | = 0.000001 m²/s |
| Stokes | St | CGS | = 0.0001 m²/s |
| Centistokes | cSt | CGS | = 0.000001 m²/s |
| Square foot per second | ft²/s | US customary | = 0.09290304 m²/s |
| Square inch per second | in²/s | US customary | = 0.00064516 m²/s |
Square meter per second quick reference
| Square meter per second | Stokes | Centistokes | Square foot per second |
|---|---|---|---|
| 1 m²/s | = 10000 St | = 1000000 cSt | ≈ 10.76391042 ft²/s |
| 10 m²/s | = 100000 St | = 10000000 cSt | ≈ 107.6391042 ft²/s |
| 100 m²/s | = 1000000 St | = 100000000 cSt | ≈ 1076.391042 ft²/s |
| 1000 m²/s | = 10000000 St | = 1000000000 cSt | ≈ 10763.91042 ft²/s |
Among the 6 kinematic viscosity units on this page, the smallest is the square millimeter per second (mm²/s) and the largest is the square meter per second (m²/s).
More kinematic viscosity conversions
About kinematic viscosity units
Kinematic viscosity is dynamic viscosity divided by density: how readily a fluid flows under its own weight. Its SI unit is the square meter per second (m²/s). Oils and fuels are rated in centistokes (cSt), equal to mm²/s; water at 20 °C is about 1 cSt.
One stokes is exactly 1 cm²/s (10⁻⁴ m²/s), and 1 cSt is exactly 1 mm²/s. One ft²/s is exactly 0.09290304 m²/s, or 92,903.04 cSt. To get dynamic viscosity in cP, multiply cSt by the density in g/cm³.
Frequently asked questions
- Is cSt the same as mm²/s?
- Yes. One centistokes is exactly one square millimeter per second.
- How do I convert cSt to cP?
- Multiply by the density in g/cm³. An oil of 100 cSt with a density of 0.87 g/cm³ is 87 cP.
- How many stokes are in one square meter per second?
- One square meter per second = 10000 St (stokes).
- How many centistokes are in one square meter per second?
- One square meter per second = 1000000 cSt (centistokes).
- How many square feet per second are in one square meter per second?
- One square meter per second ≈ 10.76391042 ft²/s (square feet per second).