Convert Square centimetres per minute to Square feet per hour
Convert Square centimetres per minute (cm²/min) to Square feet per hour (ft²/h) instantly and accurately.
Conversion Formula
ft²/h = cm²/min × 0.0645834625
About Square centimetres per minute
The square centimetre per minute (cm²/min) equals ≈1.667 × 10⁻⁶ m²/s, a transitional unit seen in older French and Soviet thermal engineering literature. Some food-science papers on heat penetration into frozen products express diffusivity in cm²/min to keep values close to unity. 1 cm²/min = 1e-4/60 m²/s ≈ 1.667 × 10⁻⁶ m²/s.
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.
Quick Reference Table
| Square centimetres per minute (cm²/min) | Square feet per hour (ft²/h) |
|---|---|
| 1 cm²/min | 0.0645835 ft²/h |
| 2 cm²/min | 0.129167 ft²/h |
| 5 cm²/min | 0.322917 ft²/h |
| 10 cm²/min | 0.645835 ft²/h |
| 25 cm²/min | 1.61459 ft²/h |
| 50 cm²/min | 3.22917 ft²/h |
| 100 cm²/min | 6.45835 ft²/h |