Convert Square feet per hour to Square millimetres per minute
Convert Square feet per hour (ft²/h) to Square millimetres per minute (mm²/min) instantly and accurately.
Conversion Formula
mm²/min = ft²/h × 1548.384
About Square feet per hour
The square foot per hour (ft²/h) equals 0.3048²/3600 ≈ 2.581 × 10⁻⁵ m²/s. It is the standard US unit for thermal diffusivity in the BTU-ft-h system, used alongside heat-transfer and mass-transfer calculations. Air at 20 °C ≈ 0.573 ft²/h; water at 20 °C ≈ 0.0096 ft²/h. 1 ft²/h ≈ 25.81 cSt.
About Square millimetres per minute
The square millimetre per minute (mm²/min) equals 1/(6 × 10⁷) m²/s ≈ 1.667 × 10⁻⁸ m²/s. It is used in polymer-film formation and printing-ink diffusion studies where minute-scale time resolution is more convenient. 1 mm²/min = 1/60 cSt.
Quick Reference Table
| Square feet per hour (ft²/h) | Square millimetres per minute (mm²/min) |
|---|---|
| 1 ft²/h | 1548.38 mm²/min |
| 2 ft²/h | 3096.77 mm²/min |
| 5 ft²/h | 7741.92 mm²/min |
| 10 ft²/h | 15483.8 mm²/min |
| 25 ft²/h | 38709.6 mm²/min |
| 50 ft²/h | 77419.2 mm²/min |
| 100 ft²/h | 154838 mm²/min |