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Volumetric Flow Rate

gpm (US)tom³/min

Convert US gallons per minute (gpm (US)) to cubic metres per minute (m³/min).

Factor1 gpm (US) = 0.003785412 m³/min

Converter

gpm (US)

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

Result
0.378541m³/min

Rendered to 6 significant figures.

Formula

Formula
m³/min = gpm (US) × 0.003785412

Multiply any value in US gallons per minute by 0.003785412 to obtain the value in cubic metres per minute.

Worked example

Convert 100 gpm (US) to m³/min.

  1. 01Start with 100 gpm (US).
  2. 02Multiply by the conversion factor: 100 × 0.003785412 = 0.378541 m³/min.
Result100 gpm (US) = 0.378541 m³/min

Conversion table

gpm (US)m³/min
10.0037854
20.0075708
50.018927
100.037854
200.075708
500.18927
1000.37854
2000.75708
5001.8927
10003.7854

Reference values rounded to 5 significant figures for display.

FAQ

What is the conversion factor from gpm (US) to m³/min?
1 gpm (US) equals 0.003785412 m³/min. To convert, multiply the value in US gallons per minute by 0.003785412.
How do I convert 1 gpm (US) to m³/min?
1 gpm (US) = 0.00378541 m³/min. For any value, multiply by 0.003785412.
How do I convert m³/min back to gpm (US)?
Divide by the same factor — or equivalently, multiply by 264.1721. So 1 m³/min = 264.172 gpm (US).
When would I need to convert US gallon per minute to cubic metre per minute?
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 m³/min 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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