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Volumetric Flow Rate

gpm (US)toL/s

Convert US gallons per minute (gpm (US)) to litres per second (L/s).

Factor1 gpm (US) = 0.0630902 L/s

Converter

gpm (US)

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

Result
6.30902L/s

Rendered to 6 significant figures.

Formula

Formula
L/s = gpm (US) × 0.0630902

Multiply any value in US gallons per minute by 0.0630902 to obtain the value in litres per second.

Worked example

Convert 100 gpm (US) to L/s.

  1. 01Start with 100 gpm (US).
  2. 02Multiply by the conversion factor: 100 × 0.0630902 = 6.30902 L/s.
Result100 gpm (US) = 6.30902 L/s

Conversion table

gpm (US)L/s
10.06309
20.12618
50.31545
100.6309
201.2618
503.1545
1006.309
20012.618
50031.545
100063.09

Reference values rounded to 5 significant figures for display.

FAQ

What is the conversion factor from gpm (US) to L/s?
1 gpm (US) equals 0.0630902 L/s. To convert, multiply the value in US gallons per minute by 0.0630902.
How do I convert 1 gpm (US) to L/s?
1 gpm (US) = 0.0630902 L/s. For any value, multiply by 0.0630902.
How do I convert L/s back to gpm (US)?
Divide by the same factor — or equivalently, multiply by 15.85032. So 1 L/s = 15.8503 gpm (US).
When would I need to convert US gallon per minute to litre per second?
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/s is a frequently needed conversion for hydraulic sizing.
Is the conversion exact?
Yes. Both gpm (US) and L/s are defined by exact SI relationships, so the displayed factor is exact (any rounding shown is only for display).

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