Convert Stokes to Square feet per hour
Convert Stokes (St) to Square feet per hour (ft²/h) instantly and accurately.
Conversion Formula
ft²/h = St × 3.87500775
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 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
| Stokes (St) | Square feet per hour (ft²/h) |
|---|---|
| 1 St | 3.87501 ft²/h |
| 2 St | 7.75002 ft²/h |
| 5 St | 19.375 ft²/h |
| 10 St | 38.7501 ft²/h |
| 25 St | 96.8752 ft²/h |
| 50 St | 193.75 ft²/h |
| 100 St | 387.501 ft²/h |