Convert Centistokes to Square feet per hour
Convert Centistokes (cSt) to Square feet per hour (ft²/h) instantly and accurately.
Conversion Formula
ft²/h = cSt × 0.0387500775
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 feet per hour
The square foot per hour (ft²/h) equals 0.3048²/3600 ≈ 2.581 × 10⁻⁵ m²/s. It is the standard US unit for thermal diffusivity in the BTU-ft-h system, used alongside heat-transfer and mass-transfer calculations. Air at 20 °C ≈ 0.573 ft²/h; water at 20 °C ≈ 0.0096 ft²/h. 1 ft²/h ≈ 25.81 cSt.
Quick Reference Table
| Centistokes (cSt) | Square feet per hour (ft²/h) |
|---|---|
| 1 cSt | 0.0387501 ft²/h |
| 2 cSt | 0.0775002 ft²/h |
| 5 cSt | 0.19375 ft²/h |
| 10 cSt | 0.387501 ft²/h |
| 25 cSt | 0.968752 ft²/h |
| 50 cSt | 1.9375 ft²/h |
| 100 cSt | 3.87501 ft²/h |