Mass Flux Density Converter
Convert between mass flux density units — kilograms per second per square meter, pounds per hour per square foot (membrane filtration rates), and more.
Results from this calculator are estimates provided for general informational purposes only, based on formulas, rates, and standards commonly accepted as of 2026. Figures may differ slightly from other calculators or professional sources due to rounding methods, differing assumptions, or regional regulations, and rules may change over time. Always consult a qualified professional — such as a financial advisor, healthcare provider, or other relevant specialist — before making decisions based on these results.
Result
10 kg/(s·m²) = 73733.811 lb/(h·ft²)
1 Kilogram per Second per Square Meter = 7373.3811 Pounds per Hour per Square Foot
1 Pound per Hour per Square Foot = 0.00013562299 Kilograms per Second per Square Meter
10 kg/(s·m²) in every supported unit
What is a Mass Flux Density Converter?
Mass flux density measures the RATE at which mass is currently passing through a given area — a membrane, a filter, or any other surface — expressed as mass flow per unit area, in kg/(s·m²). It answers questions like "how fast is water permeating this membrane, per square meter of membrane surface" during reverse-osmosis filtration, or "how quickly is moisture leaving this material's surface" during drying and evaporation.
Every unit here is defined relative to the SI base unit, kilogram per second per square meter, by a fixed multiplier, letting a process engineer's kg/(h·m²), a lab technician's g/(s·cm²), and a US plant's lb/(h·ft²) all be compared directly for membrane separation, drying, and material-transport calculations.
Conversion chart: Kilogram per Second per Square Meter to Pounds per Hour per Square Foot
Conversion table
| Kilogram per Second per Square Meter (kg/(s·m²)) | Pound per Hour per Square Foot (lb/(h·ft²)) |
|---|---|
| 0.01 kg/(s·m²) | 73.733811 lb/(h·ft²) |
| 0.1 kg/(s·m²) | 737.33811 lb/(h·ft²) |
| 1 kg/(s·m²) | 7373.3811 lb/(h·ft²) |
| 2 kg/(s·m²) | 14746.762 lb/(h·ft²) |
| 3 kg/(s·m²) | 22120.143 lb/(h·ft²) |
| 5 kg/(s·m²) | 36866.905 lb/(h·ft²) |
| 10 kg/(s·m²) | 73733.811 lb/(h·ft²) |
| 20 kg/(s·m²) | 147467.62 lb/(h·ft²) |
| 50 kg/(s·m²) | 368669.05 lb/(h·ft²) |
| 100 kg/(s·m²) | 737338.11 lb/(h·ft²) |
| 1000 kg/(s·m²) | 7373381.1 lb/(h·ft²) |
Supported Units
| Unit | Symbol | In kg/(s·m²) |
|---|---|---|
| Kilogram per Second per Square Meter | kg/(s·m²) | 1 kg/(s·m²) |
| Kilogram per Hour per Square Meter | kg/(h·m²) | 0.0002777778 kg/(s·m²) |
| Gram per Second per Square Meter | g/(s·m²) | 0.001 kg/(s·m²) |
| Gram per Second per Square Centimeter | g/(s·cm²) | 10 kg/(s·m²) |
| Kilogram per Hour per Square Foot | kg/(h·ft²) | 2.98998E-05 kg/(s·m²) |
| Pound per Hour per Square Foot | lb/(h·ft²) | 0.00013562299 kg/(s·m²) |
| Pound per Second per Square Foot | lb/(s·ft²) | 4.8824277 kg/(s·m²) |
About These Parameters
- Value
- The mass flux density value you want to convert, expressed in the "From" unit. Accepts decimals.
- From Unit
- The unit your input value is currently measured in — a lab report's g/(s·cm²), or a US plant's lb/(h·ft²).
- To Unit
- The unit you want the result converted into. Use the swap button to flip From and To instantly.
How Mass Flux Density Conversion Works
The Formula
Every unit here is defined by a fixed multiplier relative to kilograms per second per square meter. To convert a value from one unit to another:
result = value × (factor of "From" unit ÷ factor of "To" unit)
For Kilogram per Second per Square Meter → Pound per Hour per Square Foot: multiply by 7373.3811. For example, 10 kg/(s·m²) × 7373.3811 = 73733.811 lb/(h·ft²).
Mass Flux Density vs. Mass Flow Rate
Mass flux density is a mass flow rate that has been normalized by the area it passes through: mass flux density = mass flow rate ÷ area. The site's separate Flow - Mass Converter covers the un-normalized total flow rate (e.g. kilograms per second, with no area involved) — the reading you would get straight off a mass flow meter. Dividing that total flow by the cross-sectional or membrane area it flows through is what turns it into a mass flux density.
Why Area Normalization Matters
A large filtration membrane will naturally pass more total mass per second than a small one, even if the small membrane is actually performing better per unit of surface. Normalizing by area removes that size bias, letting engineers compare a lab-scale membrane coupon directly against a full production membrane module, or benchmark competing filter designs of different sizes on equal footing.
Example
A mass flux density of 10 kg/(s·m²) equals 73733.811 lb/(h·ft²). For scale, typical reverse-osmosis membranes operate around 0.01-0.03 kg/(s·m²) of permeate flux, while an industrial spray dryer's evaporation rate can run considerably higher per square meter of drying surface.
Frequently Asked Questions
What is mass flux density used for?
Mass flux density is used to quantify how fast material moves through a unit area — most commonly membrane permeation rates in reverse-osmosis and ultrafiltration systems, evaporation and drying rates off a material's surface, and mass-transport rates in chemical process design.
How is mass flux density different from mass flow rate?
Mass flow rate is the total mass moving per unit time (e.g. kilograms per second), with no reference to area. Mass flux density divides that flow rate by the area it passes through, giving a per-area rate that lets surfaces of different sizes be compared fairly.
How accurate are these conversions?
Every conversion factor used here is the exact, internationally recognized relationship between the underlying mass, time, and area units — results are limited only by floating-point display precision, not by rounded conversion constants.
Why are there only seven units on this page?
Mass flux density is a specialized quantity used mainly in membrane science and process engineering, so unlike broader categories such as length or weight, only a handful of unit combinations (metric and US customary, at second and hour time scales) see any real-world use.