Convert Pounds per square foot per hour to Kilograms per square metre per hour

Convert Pounds per square foot per hour (lb/(ft²·h)) to Kilograms per square metre per hour (kg/(m²·h)) instantly and accurately.

Conversion Formula

kg/(m²·h) = lb/(ft²·h) × 4.882427636

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).

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).

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