Mass Flux Density Converter
Convert mass flux between kg/(m²·s), kg/(m²·h), g/(cm²·s), lb/(ft²·s) and lb/(ft²·h).
Convert mass flux density
Result
Mass Flux Density units
Every unit below converts to every other one in the calculator. Values are relative to the base unit, the kilogram per square meter second (kg/(m²·s)).
| Unit | Symbol | System | Value |
|---|---|---|---|
| Kilogram per square meter second | kg/(m²·s) | SI | Base unit |
| Kilogram per square meter hour | kg/(m²·h) | SI-accepted | ≈ 0.0002777777778 kg/(m²·s) |
| Gram per square centimeter second | g/(cm²·s) | CGS | = 10 kg/(m²·s) |
| Pound per square foot second | lb/(ft²·s) | US customary | ≈ 4.882427636 kg/(m²·s) |
| Pound per square foot hour | lb/(ft²·h) | US customary | ≈ 0.001356229899 kg/(m²·s) |
Kilogram per square meter second quick reference
| Kilogram per square meter second | Pound per square foot hour |
|---|---|
| 1 kg/(m²·s) | ≈ 737.338117 lb/(ft²·h) |
| 10 kg/(m²·s) | ≈ 7373.38117 lb/(ft²·h) |
| 100 kg/(m²·s) | ≈ 73733.8117 lb/(ft²·h) |
| 1000 kg/(m²·s) | ≈ 737338.117 lb/(ft²·h) |
Among the 5 mass flux density units on this page, the smallest is the kilogram per square meter hour (kg/(m²·h)) and the largest is the gram per square centimeter second (g/(cm²·s)).
More mass flux density conversions
About mass flux density units
Mass flux density is mass flow per unit area: the mass passing through one square meter each second. Its SI unit is the kilogram per square meter second, kg/(m²·s). It is used for flow in pipes and heat exchangers, where it is often called mass velocity, and for evaporation, drying and membranes.
One g/(cm²·s) is exactly 10 kg/(m²·s). One lb/(ft²·s) is about 4.8824 kg/(m²·s), and one lb/(ft²·h) is about 4.8824 kg/(m²·h). Mass flux equals density times velocity.
Frequently asked questions
- How do I convert lb/(ft²·h) to kg/(m²·s)?
- Multiply by about 0.00135623. For example, 100,000 lb/(ft²·h) is about 135.6 kg/(m²·s).
- How is mass flux related to flow velocity?
- Mass flux = density × velocity. Water at about 1000 kg/m³ moving at 2 m/s has a mass flux of about 2000 kg/(m²·s).
- How many pounds per square foot hour are in one kilogram per square meter second?
- One kilogram per square meter second ≈ 737.338117 lb/(ft²·h) (pounds per square foot hour).