Convert Square millimetres per hour to Square metres per minute
Convert Square millimetres per hour (mm²/h) to Square metres per minute (m²/min) instantly and accurately.
Conversion Formula
m²/min = mm²/h × 1.666666667e-8
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.
About Square metres per minute
The square metre per minute (m²/min) equals 1/60 m²/s ≈0.01667 m²/s, a non-standard unit seen in some process-engineering contexts where heat soak times are measured in minutes rather than seconds. Nuclear fuel rod thermal analysis and large refractory furnace lining design occasionally cite diffusivity in m²/min. 1 m²/min = 1/60 m²/s ≈ 6000 cm²/s.
Quick Reference Table
| Square millimetres per hour (mm²/h) | Square metres per minute (m²/min) |
|---|---|
| 1 mm²/h | 1.667 × 10-8 m²/min |
| 2 mm²/h | 3.333 × 10-8 m²/min |
| 5 mm²/h | 8.333 × 10-8 m²/min |
| 10 mm²/h | 1.667 × 10-7 m²/min |
| 25 mm²/h | 4.167 × 10-7 m²/min |
| 50 mm²/h | 8.333 × 10-7 m²/min |
| 100 mm²/h | 1.667 × 10-6 m²/min |