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 ≈1.792 × 10⁻⁷ m²/s, used in US heat-transfer handbooks and HVAC insulation specifications. Pre-SI tables for building insulation board and refractory brick often list thermal diffusivity in in²/h. Firebrick: ≈3.5 in²/h; rigid foam: ≈0.8-1.2 in²/h. 1 in²/h = 0.00064516/3600 m²/s.
About Square feet per second
The square foot per second (ft²/s) equals 0.09290304 m²/s, the imperial base unit for thermal diffusivity analogous to m²/s. It is used in US aerospace engineering and combustion research for highly conductive materials and high-temperature plasmas. Diamond, the most thermally diffusive solid at ≈7 cm²/s, converts to ≈0.0075 ft²/s; silver to ≈0.00167 ft²/s. 1 ft²/s = 3600 ft²/h = 0.09290304 m²/s.
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 |