Convert Centistokes to Square inches per second
Convert Centistokes (cSt) to Square inches per second (in²/s) instantly and accurately.
Conversion Formula
in²/s = cSt × 0.0015500031
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 inches per second
The square inch per second (in²/s) equals 0.0254² = 6.4516 × 10⁻⁴ m²/s. It is the coherent FPS kinematic unit based on the inch, found in US fluid power, hydraulics, and bearing-design references. 1 in²/s = 645.16 cSt = 6.4516 St.
Quick Reference Table
| Centistokes (cSt) | Square inches per second (in²/s) |
|---|---|
| 1 cSt | 0.00155 in²/s |
| 2 cSt | 0.00310001 in²/s |
| 5 cSt | 0.00775002 in²/s |
| 10 cSt | 0.0155 in²/s |
| 25 cSt | 0.0387501 in²/s |
| 50 cSt | 0.0775002 in²/s |
| 100 cSt | 0.155 in²/s |