Convert Square feet per hour to Stokes
Convert Square feet per hour (ft²/h) to Stokes (St) instantly and accurately.
Conversion Formula
St = ft²/h × 0.258064
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.
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.
Quick Reference Table
| Square feet per hour (ft²/h) | Stokes (St) |
|---|---|
| 1 ft²/h | 0.258064 St |
| 2 ft²/h | 0.516128 St |
| 5 ft²/h | 1.29032 St |
| 10 ft²/h | 2.58064 St |
| 25 ft²/h | 6.4516 St |
| 50 ft²/h | 12.9032 St |
| 100 ft²/h | 25.8064 St |