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Volumetric Flux

gpm/ft²tocm/hr

Convert US gallons per minute per square foot (gpm/ft²) to centimetres per hour (volumetric flux) (cm/hr).

Factor1 gpm/ft² = 244.4688 cm/hr

Converter

gpm/ft²

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

Result
244.469cm/hr

Rendered to 6 significant figures.

Formula

Formula
cm/hr = gpm/ft² × 244.4688

Multiply any value in US gallons per minute per square foot by 244.4688 to obtain the value in centimetres per hour (volumetric flux).

Worked example

Convert 1 gpm/ft² to cm/hr.

  1. 01Start with 1 gpm/ft².
  2. 02Multiply by the conversion factor: 1 × 244.4688 = 244.469 cm/hr.
Result1 gpm/ft² = 244.469 cm/hr

Conversion table

gpm/ft²cm/hr
1244.47
2488.94
51222.3
102444.7
204889.4
5012223
10024447
20048894
5001.2223e+5
10002.4447e+5

Reference values rounded to 5 significant figures for display.

FAQ

What is the conversion factor from gpm/ft² to cm/hr?
1 gpm/ft² equals 244.4688 cm/hr. To convert, multiply the value in US gallons per minute per square foot by 244.4688.
How do I convert 1 gpm/ft² to cm/hr?
1 gpm/ft² = 244.469 cm/hr. For any value, multiply by 244.4688.
How do I convert cm/hr back to gpm/ft²?
Divide by the same factor — or equivalently, multiply by 0.004090502. So 1 cm/hr = 0.0040905 gpm/ft².
When would I need to convert US gallon per minute per square foot to centimetre per hour (volumetric flux)?
Volumetric-flux conversions between gpm/ft² and cm/hr 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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