Convert Centistokes to Square millimetres per second
Convert Centistokes (cSt) to Square millimetres per second (mm²/s) instantly and accurately.
Conversion Formula
mm²/s = cSt × 1
About Centistokes
The centistoke (cSt) equals 10⁻⁶ m²/s = 1 mm²/s. It is the dominant unit for kinematic viscosity in industry worldwide. ASTM D445, ISO 3104, and ACEA lubricant specifications all use cSt. Water at 20 °C ≈ 1.004 cSt; diesel at 40 °C: 2.0-4.5 cSt; SAE 40 oil at 100 °C: 12.5-16.3 cSt. 1 cSt = 10⁻² St.
About Square millimetres per second
The square millimetre per second (mm²/s) equals 10⁻⁶ m²/s, numerically identical to 1 centistoke (cSt). It is the preferred SI-consistent expression: ISO 3104, DIN 51562, and ASTM viscosity standards all use mm²/s interchangeably with cSt. Water at 20 °C ≈ 1.004 mm²/s; SAE 10W-30 at 100 °C: 9.3-12.5 mm²/s. 1 mm²/s = 1 cSt.
Quick Reference Table
| Centistokes (cSt) | Square millimetres per second (mm²/s) |
|---|---|
| 1 cSt | 1 mm²/s |
| 2 cSt | 2 mm²/s |
| 5 cSt | 5 mm²/s |
| 10 cSt | 10 mm²/s |
| 25 cSt | 25 mm²/s |
| 50 cSt | 50 mm²/s |
| 100 cSt | 100 mm²/s |