Convert Square feet per minute to Square inches per minute
Convert Square feet per minute (ft²/min) to Square inches per minute (in²/min) instantly and accurately.
Conversion Formula
in²/min = ft²/min × 144
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 minute
The square inch per minute (in²/min) equals ≈1.075 × 10⁻⁵ m²/s, found in US military and aerospace specifications for thermal protection materials and ablative heat shields. Some NASA technical reports on reentry vehicle TPS (Thermal Protection System) materials quote diffusivity in in²/min. 1 in²/min = 0.00064516/60 m²/s.
Quick Reference Table
| Square feet per minute (ft²/min) | Square inches per minute (in²/min) |
|---|---|
| 1 ft²/min | 144 in²/min |
| 2 ft²/min | 288 in²/min |
| 5 ft²/min | 720 in²/min |
| 10 ft²/min | 1440 in²/min |
| 25 ft²/min | 3600 in²/min |
| 50 ft²/min | 7200 in²/min |
| 100 ft²/min | 14400 in²/min |