Convert Square decimetres per second to Square feet per hour
Convert Square decimetres per second (dm²/s) to Square feet per hour (ft²/h) instantly and accurately.
Conversion Formula
ft²/h = dm²/s × 387.500775
About Square decimetres per second
The square decimetre per second (dm²/s) equals exactly 0.01 m²/s, a rarely used but exact-ratio metric unit. It is occasionally encountered in European academic papers on molten metals and liquid semiconductors, where diffusivity values in m²/s are small fractions and dm²/s gives more convenient numeric magnitudes. 1 dm²/s = 1e-2 m²/s = 100 cm²/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 decimetres per second (dm²/s) | Square feet per hour (ft²/h) |
|---|---|
| 1 dm²/s | 387.501 ft²/h |
| 2 dm²/s | 775.002 ft²/h |
| 5 dm²/s | 1937.5 ft²/h |
| 10 dm²/s | 3875.01 ft²/h |
| 25 dm²/s | 9687.52 ft²/h |
| 50 dm²/s | 19375 ft²/h |
| 100 dm²/s | 38750.1 ft²/h |