Quick reference table
Common kinematic viscosity conversions
| From | To |
|---|---|
| 1 cSt | 0.000001 m²/s |
| 1 St | 1 cSt |
| 1 mm²/s | 1 cSt |
| 1 m²/s | 1 cSt |
| 1 ft²/s | 0.09290304 m²/s |
How to convert kinematic viscosity
Kinematic viscosity is dynamic viscosity divided by density. Lubricating oils are often graded in centistokes (cSt), which equals mm²/s.
Every kinematic viscosity unit is a fixed multiple of one base unit, the m²/s. To convert a value, multiply it by the size of the starting unit and divide by the size of the target unit. For example, to convert cSt to m²/s, multiply by 0.000001. To go the other way, divide by 0.000001.
The converter above does this for you and shows the exact formula under the result.
Worked examples
Centistokes to Square meters per second
| Centistokes (cSt) | Square meters per second (m²/s) |
|---|---|
| 1 cSt | 0.000001 m²/s |
| 2 cSt | 0.000002 m²/s |
| 5 cSt | 0.000005 m²/s |
| 10 cSt | 0.000010 m²/s |
| 25 cSt | 0.000025 m²/s |
| 50 cSt | 0.000050 m²/s |
| 100 cSt | 0.000100 m²/s |
| 1,000 cSt | 0.001000 m²/s |
Stokes to Centistokes
| Stokes (St) | Centistokes (cSt) |
|---|---|
| 1 St | 1 cSt |
| 2 St | 2 cSt |
| 5 St | 5 cSt |
| 10 St | 1 cSt |
| 25 St | 25 cSt |
| 50 St | 5 cSt |
| 100 St | 1 cSt |
| 1,000 St | 1 cSt |
Kinematic viscosity units explained
| Unit | Symbol | Equals |
|---|---|---|
| Square meters per second | m²/s | 1 m²/s = 1 m²/s |
| Square centimeters per second | cm²/s | 1 cm²/s = 0.0001 m²/s |
| Square millimeters per second | mm²/s | 1 mm²/s = 0.000001 m²/s |
| Stokes | St | 1 St = 0.0001 m²/s |
| Centistokes | cSt | 1 cSt = 0.000001 m²/s |
| Square feet per second | ft²/s | 1 ft²/s = 0.09290304 m²/s |
| Square inches per second | in²/s | 1 in²/s = 0.00064516 m²/s |
Popular conversions: cst to m2/s, stokes to cst.
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 m²/s?
Multiply the value in cSt by 0.000001 to get m²/s. For example, 10 cSt = 0.000010 m²/s.
How many m²/s is 1 cSt?
1 cSt = 0.000001 m²/s, and 1 m²/s = 1 cSt.
Does this kinematic viscosity converter work offline?
Yes. After the page has loaded once, all calculations run in your browser, so it keeps working without an internet connection.