Convert Square feet per second to Square inches per hour
Convert Square feet per second (ft²/s) to Square inches per hour (in²/h) instantly and accurately.
Conversion Formula
in²/h = ft²/s × 518400
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.
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.
Quick Reference Table
| Square feet per second (ft²/s) | Square inches per hour (in²/h) |
|---|---|
| 1 ft²/s | 518400 in²/h |
| 2 ft²/s | 1036800 in²/h |
| 5 ft²/s | 2592000 in²/h |
| 10 ft²/s | 5184000 in²/h |
| 25 ft²/s | 12960000 in²/h |
| 50 ft²/s | 25920000 in²/h |
| 100 ft²/s | 51840000 in²/h |