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Volumetric Flow Rate

gpm (US)toL/hr

Convert US gallons per minute (gpm (US)) to litres per hour (L/hr).

Factor1 gpm (US) = 227.1247 L/hr

Converter

gpm (US)

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

Result
2271.25L/hr

Rendered to 6 significant figures.

Formula

Formula
L/hr = gpm (US) × 227.1247

Multiply any value in US gallons per minute by 227.1247 to obtain the value in litres per hour.

Worked example

Convert 10 gpm (US) to L/hr.

  1. 01Start with 10 gpm (US).
  2. 02Multiply by the conversion factor: 10 × 227.1247 = 2271.25 L/hr.
Result10 gpm (US) = 2271.25 L/hr

Conversion table

gpm (US)L/hr
1227.12
2454.25
51135.6
102271.2
204542.5
5011356
10022712
20045425
5001.1356e+5
10002.2712e+5

Reference values rounded to 5 significant figures for display.

FAQ

What is the conversion factor from gpm (US) to L/hr?
1 gpm (US) equals 227.1247 L/hr. To convert, multiply the value in US gallons per minute by 227.1247.
How do I convert 1 gpm (US) to L/hr?
1 gpm (US) = 227.125 L/hr. For any value, multiply by 227.1247.
How do I convert L/hr back to gpm (US)?
Divide by the same factor — or equivalently, multiply by 0.004402868. So 1 L/hr = 0.00440287 gpm (US).
When would I need to convert US gallon per minute to litre 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. gpm (US) to L/hr 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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