Convert Square millimetres per second to Centistokes
Convert Square millimetres per second (mm²/s) to Centistokes (cSt) instantly and accurately.
Conversion Formula
cSt = mm²/s × 1
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.
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.
Quick Reference Table
| Square millimetres per second (mm²/s) | Centistokes (cSt) |
|---|---|
| 1 mm²/s | 1 cSt |
| 2 mm²/s | 2 cSt |
| 5 mm²/s | 5 cSt |
| 10 mm²/s | 10 cSt |
| 25 mm²/s | 25 cSt |
| 50 mm²/s | 50 cSt |
| 100 mm²/s | 100 cSt |