Convert Grams per Second per Square Meter to Pounds per Second per Square Foot
Gram per Second per Square Meter (g/(s·m²)) to Pound per Second per Square Foot (lb/(s·ft²)) mass flux density conversion — enter any value below to get an instant result, or use the table for common values.
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
1 g/(s·m²) = 0.00020481614 lb/(s·ft²)
1 Gram per Second per Square Meter = 0.00020481614 Pounds per Second per Square Foot
1 Pound per Second per Square Foot = 4882.4277 Grams per Second per Square Meter
1 g/(s·m²) in every supported unit
Conversion chart: Gram per Second per Square Meter to Pounds per Second per Square Foot
Conversion table
| Gram per Second per Square Meter (g/(s·m²)) | Pound per Second per Square Foot (lb/(s·ft²)) |
|---|---|
| 0.01 g/(s·m²) | 2.04816E-06 lb/(s·ft²) |
| 0.1 g/(s·m²) | 2.04816E-05 lb/(s·ft²) |
| 1 g/(s·m²) | 0.00020481614 lb/(s·ft²) |
| 2 g/(s·m²) | 0.00040963228 lb/(s·ft²) |
| 3 g/(s·m²) | 0.00061444842 lb/(s·ft²) |
| 5 g/(s·m²) | 0.0010240807 lb/(s·ft²) |
| 10 g/(s·m²) | 0.0020481614 lb/(s·ft²) |
| 20 g/(s·m²) | 0.0040963228 lb/(s·ft²) |
| 50 g/(s·m²) | 0.010240807 lb/(s·ft²) |
| 100 g/(s·m²) | 0.020481614 lb/(s·ft²) |
| 1000 g/(s·m²) | 0.20481614 lb/(s·ft²) |
Gram per Second per Square Meter (g/(s·m²))
Definition: A finer-scale metric mass flux density unit sized for low-throughput laboratory or bench-scale mass-transfer measurements.
History: A straightforward CGS-influenced scaling of the SI base unit, used wherever kilogram-scale figures would read as inconveniently small decimals.
Current use: Used in laboratory membrane-testing rigs and small-scale evaporation studies, where mass fluxes rarely reach a full kilogram per second.
Pound per Second per Square Foot (lb/(s·ft²))
Definition: The same US customary mass flux density concept as pound per hour per square foot, but scaled to seconds for rapid or high-intensity mass-transfer processes.
History: A natural time-unit variant used wherever mass-transfer calculations need to match instantaneous, second-based rates rather than hourly process-scale figures.
Current use: Used in high-intensity US industrial process engineering, such as rapid spray-drying or pneumatic-conveying mass-transfer calculations.
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 Gram per Second per Square Meter → Pound per Second per Square Foot: multiply by 0.00020481614. For example, 1 g/(s·m²) × 0.00020481614 = 0.00020481614 lb/(s·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 1 g/(s·m²) equals 0.00020481614 lb/(s·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
How many Pounds per Second per Square Foot are in 1 Gram per Second per Square Meter?
1 Gram per Second per Square Meter (g/(s·m²)) equals exactly 0.00020481614 Pounds per Second per Square Foot (lb/(s·ft²)).
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.