Convert Square inches per hour to Square feet per hour
Convert Square inches per hour (in²/h) to Square feet per hour (ft²/h) instantly and accurately.
Conversion Formula
ft²/h = in²/h × 0.006944444444
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.
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
| Square inches per hour (in²/h) | Square feet per hour (ft²/h) |
|---|---|
| 1 in²/h | 0.00694444 ft²/h |
| 2 in²/h | 0.0138889 ft²/h |
| 5 in²/h | 0.0347222 ft²/h |
| 10 in²/h | 0.0694444 ft²/h |
| 25 in²/h | 0.173611 ft²/h |
| 50 in²/h | 0.347222 ft²/h |
| 100 in²/h | 0.694444 ft²/h |