Convert Square feet per hour to Square inches per hour
Convert Square feet per hour (ft²/h) to Square inches per hour (in²/h) instantly and accurately.
Conversion Formula
in²/h = ft²/h × 144
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 Square inches per hour
The square inch per hour (in²/h) equals 0.0254²/3600 ≈ 1.792 × 10⁻⁷ m²/s. It is found in US heat-transfer and diffusion textbooks that use the BTU-inch-hour unit system alongside thermal diffusivity tables. 1 in²/h ≈ 0.1792 cSt.
Quick Reference Table
| Square feet per hour (ft²/h) | Square inches per hour (in²/h) |
|---|---|
| 1 ft²/h | 144 in²/h |
| 2 ft²/h | 288 in²/h |
| 5 ft²/h | 720 in²/h |
| 10 ft²/h | 1440 in²/h |
| 25 ft²/h | 3600 in²/h |
| 50 ft²/h | 7200 in²/h |
| 100 ft²/h | 14400 in²/h |