Convert Stokes to Centistokes
Convert Stokes (St) to Centistokes (cSt) instantly and accurately.
Conversion Formula
cSt = St × 100
About Stokes
The stoke (St) equals 1 cm²/s = 10⁻⁴ m²/s, the CGS unit of kinematic viscosity named after Sir George Gabriel Stokes. Its hundredth part, the centistoke, is now dominant, but the stoke still appears in older fluid-mechanics texts and archival API and ASTM data. Water at 20 °C ≈ 0.01004 St; air at 20 °C ≈ 0.1516 St. 1 St = 100 cSt = 10⁻⁴ m²/s.
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
| Stokes (St) | Centistokes (cSt) |
|---|---|
| 1 St | 100 cSt |
| 2 St | 200 cSt |
| 5 St | 500 cSt |
| 10 St | 1000 cSt |
| 25 St | 2500 cSt |
| 50 St | 5000 cSt |
| 100 St | 10000 cSt |