Convert Grams per square metre per hour to Pounds per square foot per hour
Convert Grams per square metre per hour (g/(m²·h)) to Pounds per square foot per hour (lb/(ft²·h)) instantly and accurately.
Conversion Formula
lb/(ft²·h) = g/(m²·h) × 0.0002048161436
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 Pounds per square foot per hour
The pound per square foot per hour (lb/(ft²·h)) equals 0.45359237/(0.09290304 × 3600) ≈ 1.356 × 10⁻³ kg/(m²·s). It is used in US heat and mass transfer texts (e.g., Perry's Chemical Engineers' Handbook) for mass flux through surfaces in drying, absorption, and distillation operations using consistent BTU-lb-h units. 1 lb/(ft²·h) ≈ 1.356 g/(m²·s).
Quick Reference Table
| Grams per square metre per hour (g/(m²·h)) | Pounds per square foot per hour (lb/(ft²·h)) |
|---|---|
| 1 g/(m²·h) | 0.000204816 lb/(ft²·h) |
| 2 g/(m²·h) | 0.000409632 lb/(ft²·h) |
| 5 g/(m²·h) | 0.00102408 lb/(ft²·h) |
| 10 g/(m²·h) | 0.00204816 lb/(ft²·h) |
| 25 g/(m²·h) | 0.0051204 lb/(ft²·h) |
| 50 g/(m²·h) | 0.0102408 lb/(ft²·h) |
| 100 g/(m²·h) | 0.0204816 lb/(ft²·h) |