Convert Square inches per hour to Square feet per second
Convert Square inches per hour (in²/h) to Square feet per second (ft²/s) instantly and accurately.
Conversion Formula
ft²/s = in²/h × 1.929012346e-6
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 second
The square foot per second (ft²/s) equals 0.3048² = 0.09290304 m²/s. It is the coherent FPS kinematic viscosity unit, used in US aerospace, hydraulic machinery, and civil/coastal engineering. Water at 20 °C ≈ 1.082 × 10⁻⁵ ft²/s; air at 20 °C ≈ 1.632 × 10⁻⁴ ft²/s. 1 ft²/s ≈ 92903 cSt.
Quick Reference Table
| Square inches per hour (in²/h) | Square feet per second (ft²/s) |
|---|---|
| 1 in²/h | 1.929 × 10-6 ft²/s |
| 2 in²/h | 3.858 × 10-6 ft²/s |
| 5 in²/h | 9.645 × 10-6 ft²/s |
| 10 in²/h | 1.929 × 10-5 ft²/s |
| 25 in²/h | 4.823 × 10-5 ft²/s |
| 50 in²/h | 9.645 × 10-5 ft²/s |
| 100 in²/h | 0.000192901 ft²/s |