Convert Kilograms per square metre per hour to Kilograms per square metre per second
Convert Kilograms per square metre per hour (kg/(m²·h)) to Kilograms per square metre per second (kg/(m²·s)) instantly and accurately.
Conversion Formula
kg/(m²·s) = kg/(m²·h) × 0.0002777777778
About Kilograms per square metre per hour
The kilogram per square metre per hour (kg/(m²·h)) equals 1/3600 ≈ 2.778 × 10⁻⁴ kg/(m²·s). It is the most common practical SI-based unit in process engineering for mass transfer coefficients, boiler evaporation rates, and precipitation flux in meteorology. Rain of 10 mm/h ≈ 10 kg/(m²·h). 1 kg/(m²·h) = 1 000 g/(m²·h).
About Kilograms per square metre per second
The kilogram per square metre per second (kg/(m²·s)) is the SI coherent unit of mass flux density, equal to 1 kg·m⁻²·s⁻¹. It appears directly in the continuity equation (ṁ = ρv) and in Stefan's law for evaporation. Rocket nozzle throat mass flux can reach 500-2000 kg/(m²·s); convective heat exchangers: 100-500 kg/(m²·s). 1 kg/(m²·s) = 1 000 g/(m²·s).
Quick Reference Table
| Kilograms per square metre per hour (kg/(m²·h)) | Kilograms per square metre per second (kg/(m²·s)) |
|---|---|
| 1 kg/(m²·h) | 0.000277778 kg/(m²·s) |
| 2 kg/(m²·h) | 0.000555556 kg/(m²·s) |
| 5 kg/(m²·h) | 0.00138889 kg/(m²·s) |
| 10 kg/(m²·h) | 0.00277778 kg/(m²·s) |
| 25 kg/(m²·h) | 0.00694444 kg/(m²·s) |
| 50 kg/(m²·h) | 0.0138889 kg/(m²·s) |
| 100 kg/(m²·h) | 0.0277778 kg/(m²·s) |