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 ≈2.581 × 10⁻⁵ m²/s and is the dominant unit in US engineering practice for thermal diffusivity of building materials and industrial insulation. ASHRAE handbooks, Perry's Chemical Engineers' Handbook, and NFPA fire-resistance tables all list diffusivity in ft²/h. Steel: ≈0.4-0.5 ft²/h; concrete: ≈0.023 ft²/h; mineral wool: ≈0.005 ft²/h. 1 ft²/h = 0.09290304/3600 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 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 |