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Volumetric Flux

gpm/ft²tom/day

Convert US gallons per minute per square foot (gpm/ft²) to metres per day (volumetric flux) (m/day).

Factor1 gpm/ft² = 58.67251 m/day

Converter

gpm/ft²

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

Result
58.6725m/day

Rendered to 6 significant figures.

Formula

Formula
m/day = gpm/ft² × 58.67251

Multiply any value in US gallons per minute per square foot by 58.67251 to obtain the value in metres per day (volumetric flux).

Worked example

Convert 1 gpm/ft² to m/day.

  1. 01Start with 1 gpm/ft².
  2. 02Multiply by the conversion factor: 1 × 58.67251 = 58.6725 m/day.
Result1 gpm/ft² = 58.6725 m/day

Conversion table

gpm/ft²m/day
158.673
2117.35
5293.36
10586.73
201173.5
502933.6
1005867.3
20011735
50029336
100058673

Reference values rounded to 5 significant figures for display.

FAQ

What is the conversion factor from gpm/ft² to m/day?
1 gpm/ft² equals 58.67251 m/day. To convert, multiply the value in US gallons per minute per square foot by 58.67251.
How do I convert 1 gpm/ft² to m/day?
1 gpm/ft² = 58.6725 m/day. For any value, multiply by 58.67251.
How do I convert m/day back to gpm/ft²?
Divide by the same factor — or equivalently, multiply by 0.01704376. So 1 m/day = 0.0170438 gpm/ft².
When would I need to convert US gallon per minute per square foot to metre per day (volumetric flux)?
Volumetric-flux conversions between gpm/ft² and m/day 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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