Convert Square inches per minute to Square feet per minute
Convert Square inches per minute (in²/min) to Square feet per minute (ft²/min) instantly and accurately.
Conversion Formula
ft²/min = in²/min × 0.006944444444
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.
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.
Quick Reference Table
| Square inches per minute (in²/min) | Square feet per minute (ft²/min) |
|---|---|
| 1 in²/min | 0.00694444 ft²/min |
| 2 in²/min | 0.0138889 ft²/min |
| 5 in²/min | 0.0347222 ft²/min |
| 10 in²/min | 0.0694444 ft²/min |
| 25 in²/min | 0.173611 ft²/min |
| 50 in²/min | 0.347222 ft²/min |
| 100 in²/min | 0.694444 ft²/min |