Convert Grams per square metre per hour to Kilograms per square metre per second
Convert Grams per square metre per hour (g/(m²·h)) to Kilograms per square metre per second (kg/(m²·s)) instantly and accurately.
Conversion Formula
kg/(m²·s) = g/(m²·h) × 2.777777778e-7
About Grams per square metre per hour
The gram per square metre per hour (g/(m²·h)) equals 10⁻³/3600 ≈ 2.778 × 10⁻⁷ kg/(m²·s). It is widely used in textile and paper engineering for moisture management, evaporation studies, and water-vapour transmission rate (WVTR) testing of barrier materials per ISO 2528 and ASTM E96. Breathable fabrics range 500-10 000 g/(m²·h) (=500-10 000 gsm/h). 1 g/(m²·h) = 10⁻³ kg/(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
| Grams per square metre per hour (g/(m²·h)) | Kilograms per square metre per second (kg/(m²·s)) |
|---|---|
| 1 g/(m²·h) | 2.778 × 10-7 kg/(m²·s) |
| 2 g/(m²·h) | 5.556 × 10-7 kg/(m²·s) |
| 5 g/(m²·h) | 1.389 × 10-6 kg/(m²·s) |
| 10 g/(m²·h) | 2.778 × 10-6 kg/(m²·s) |
| 25 g/(m²·h) | 6.944 × 10-6 kg/(m²·s) |
| 50 g/(m²·h) | 1.389 × 10-5 kg/(m²·s) |
| 100 g/(m²·h) | 2.778 × 10-5 kg/(m²·s) |