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Volumetric Flow Rate

gal/day (US)togph (US)

Convert US gallons per day (gal/day (US)) to US gallons per hour (gph (US)).

Factor1 gal/day (US) = 0.04166667 gph (US)

Converter

gal/day (US)

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

Result
10gph (US)

Rendered to 6 significant figures.

Formula

Formula
gph (US) = gal/day (US) × 0.04166667

Multiply any value in US gallons per day by 0.04166667 to obtain the value in US gallons per hour.

Worked example

Convert 240 gal/day (US) to gph (US).

  1. 01Start with 240 gal/day (US).
  2. 02Multiply by the conversion factor: 240 × 0.04166667 = 10 gph (US).
Result240 gal/day (US) = 10 gph (US)

Conversion table

gal/day (US)gph (US)
10.041667
20.083333
50.20833
100.41667
200.83333
502.0833
1004.1667
2008.3333
50020.833
100041.667

Reference values rounded to 5 significant figures for display.

FAQ

What is the conversion factor from gal/day (US) to gph (US)?
1 gal/day (US) equals 0.04166667 gph (US). To convert, multiply the value in US gallons per day by 0.04166667.
How do I convert 1 gal/day (US) to gph (US)?
1 gal/day (US) = 0.0416667 gph (US). For any value, multiply by 0.04166667.
How do I convert gph (US) back to gal/day (US)?
Divide by the same factor — or equivalently, multiply by 24. So 1 gph (US) = 24 gal/day (US).
When would I need to convert US gallon per day to US gallon per hour?
Flow-rate conversions show up in pump curve interpretation, control valve sizing (Cv vs Kv), and aligning vendor specifications with process simulation outputs. gal/day (US) to gph (US) is a frequently needed conversion for flow datasheet preparation.
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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