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Volumetric Flux

in/mintogpm/ft²

Convert inches per minute (volumetric flux) (in/min) to US gallons per minute per square foot (gpm/ft²).

Factor1 in/min = 0.6233924 gpm/ft²

Converter

in/min

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

Result
0.623392gpm/ft²

Rendered to 6 significant figures.

Formula

Formula
gpm/ft² = in/min × 0.6233924

Multiply any value in inches per minute (volumetric flux) by 0.6233924 to obtain the value in US gallons per minute per square foot.

Worked example

Convert 1 in/min to gpm/ft².

  1. 01Start with 1 in/min.
  2. 02Multiply by the conversion factor: 1 × 0.6233924 = 0.623392 gpm/ft².
Result1 in/min = 0.623392 gpm/ft²

Conversion table

in/mingpm/ft²
10.62339
21.2468
53.117
106.2339
2012.468
5031.17
10062.339
200124.68
500311.7
1000623.39

Reference values rounded to 5 significant figures for display.

FAQ

What is the conversion factor from in/min to gpm/ft²?
1 in/min equals 0.6233924 gpm/ft². To convert, multiply the value in inches per minute (volumetric flux) by 0.6233924.
How do I convert 1 in/min to gpm/ft²?
1 in/min = 0.623392 gpm/ft². For any value, multiply by 0.6233924.
How do I convert gpm/ft² back to in/min?
Divide by the same factor — or equivalently, multiply by 1.604126. So 1 gpm/ft² = 1.60413 in/min.
When would I need to convert inch per minute (volumetric flux) to US gallon per minute per square foot?
Volumetric-flux conversions between in/min and gpm/ft² 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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