Convert Square centimetres per minute to Square millimetres per hour
Convert Square centimetres per minute (cm²/min) to Square millimetres per hour (mm²/h) instantly and accurately.
Conversion Formula
mm²/h = cm²/min × 6000
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 millimetres per hour
The square millimetre per hour (mm²/h) equals 1/3 600 000 000 m²/s, the smallest practical thermal diffusivity unit. It is used in very slow heat-transfer processes such as diffusion through frozen soils or phase-change materials studied over many hours. Heavy clay soils can show diffusivity values of 1-2 mm²/h. 1 mm²/h = 1e-6/3600 m²/s.
Quick Reference Table
| Square centimetres per minute (cm²/min) | Square millimetres per hour (mm²/h) |
|---|---|
| 1 cm²/min | 6000 mm²/h |
| 2 cm²/min | 12000 mm²/h |
| 5 cm²/min | 30000 mm²/h |
| 10 cm²/min | 60000 mm²/h |
| 25 cm²/min | 150000 mm²/h |
| 50 cm²/min | 300000 mm²/h |
| 100 cm²/min | 600000 mm²/h |