Convert Square feet per minute to Square inches per hour
Convert Square feet per minute (ft²/min) to Square inches per hour (in²/h) instantly and accurately.
Conversion Formula
in²/h = ft²/min × 8640
About Square feet per minute
The square foot per minute (ft²/min) equals ≈1.548 × 10⁻³ m²/s, an uncommon transitional unit appearing in some older US industrial furnace design charts and heat-treatment process sheets where holding times are expressed in minutes. 1 ft²/min = 60 ft²/h = 0.09290304/60 m²/s ≈1.548 × 10⁻³ 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 minute (ft²/min) | Square inches per hour (in²/h) |
|---|---|
| 1 ft²/min | 8640 in²/h |
| 2 ft²/min | 17280 in²/h |
| 5 ft²/min | 43200 in²/h |
| 10 ft²/min | 86400 in²/h |
| 25 ft²/min | 216000 in²/h |
| 50 ft²/min | 432000 in²/h |
| 100 ft²/min | 864000 in²/h |