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Volumetric Flux

gpm/ft²tom³/m²/h

Convert US gallons per minute per square foot (gpm/ft²) to cubic metres per square metre per hour (m³/m²/h).

Factor1 gpm/ft² = 2.444688 m³/m²/h

Converter

gpm/ft²

Accepts numbers or expressions, e.g. 150 + 14.7

Result
2.44469m³/m²/h

Rendered to 6 significant figures.

Formula

Formula
m³/m²/h = gpm/ft² × 2.444688

Multiply any value in US gallons per minute per square foot by 2.444688 to obtain the value in cubic metres per square metre per hour.

Worked example

Convert 1 gpm/ft² to m³/m²/h.

  1. 01Start with 1 gpm/ft².
  2. 02Multiply by the conversion factor: 1 × 2.444688 = 2.44469 m³/m²/h.
Result1 gpm/ft² = 2.44469 m³/m²/h

Conversion table

gpm/ft²m³/m²/h
12.4447
24.8894
512.223
1024.447
2048.894
50122.23
100244.47
200488.94
5001222.3
10002444.7

Reference values rounded to 5 significant figures for display.

FAQ

What is the conversion factor from gpm/ft² to m³/m²/h?
1 gpm/ft² equals 2.444688 m³/m²/h. To convert, multiply the value in US gallons per minute per square foot by 2.444688.
How do I convert 1 gpm/ft² to m³/m²/h?
1 gpm/ft² = 2.44469 m³/m²/h. For any value, multiply by 2.444688.
How do I convert m³/m²/h back to gpm/ft²?
Divide by the same factor — or equivalently, multiply by 0.4090502. So 1 m³/m²/h = 0.40905 gpm/ft².
When would I need to convert US gallon per minute per square foot to cubic metre per square metre per hour?
Volumetric-flux conversions between gpm/ft² and m³/m²/h are routine in membrane filtration (RO, UF, MF, NF permeate flux), hydraulic loading specification, water-treatment design, hydrometallurgy and packed-bed column loading, and environmental engineering. LMH (L/m²/h) and gfd (gal/ft²/day) dominate membrane datasheets; m³/m²/h and m³/m²/day cover SI engineering ladders; m/day and cm/s appear as superficial velocity in hydromet and packed-bed work. Volumetric flux is the same physical quantity as superficial velocity (m³/m²/s ≡ m/s) but is kept distinct from the velocity and flow categories because the engineering intent is volumetric throughput per unit area, not bulk motion or total throughput.
Is the conversion exact?
The factor shown is precise to at least 7 significant figures. For most process-engineering work this is far better than instrument accuracy. For metrology or trade applications, refer to the relevant national standard (NIST, BIPM, ISO 80000).

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