Centistokes (cSt)
Centistokes (cSt) equals 10⁻⁶ m²/s. Water at 20°C has a kinematic viscosity of approximately 1 centistoke.
Centistokes is the standard industry unit for lubricants, fuels, and process fluids — from water (~1 cSt) to heavy oils.
Convert centistokes to square millimeter per second instantly. Type in either field — results update live.
Selected cSt values converted to mm²/s using the exact factor from this tool.
| cSt | mm²/s |
|---|---|
| 0.01 | 0.01 |
| 0.1 | 0.1 |
| 1 | 1 |
| 2 | 2 |
| 3 | 3 |
| 5 | 5 |
| 10 | 10 |
| 20 | 20 |
| 50 | 50 |
| 100 | 100 |
| 1,000 | 1,000 |
Exact conversion factors in both directions, plus a worked example.
1 cSt = 1 mm²/s
1 mm²/s = 1 cSt
To convert centistokes to square millimeter per second, multiply by 1.
To convert square millimeter per second to centistokes, multiply by 1.
Example: convert 10 cSt to mm²/s
10 × 1 = 10 mm²/s
Short background on the units used in this conversion.
Centistokes (cSt) equals 10⁻⁶ m²/s. Water at 20°C has a kinematic viscosity of approximately 1 centistoke.
Centistokes is the standard industry unit for lubricants, fuels, and process fluids — from water (~1 cSt) to heavy oils.
Square millimeter per second equals 10⁻⁶ m²/s — numerically equal to one centistoke.
Square millimeters per second provide an SI-compatible way to express the same values as centistokes.
mm²/s = cSt × 1cSt = mm²/s × 1, using the same exact factors as this converter.Jump to any viscosity-kinematic conversion starting from centistokes — including the reverse direction and every other unit in our dataset.