Flow Rate Converter: GPM, L/min, m³/h, CFM
Enter a flow rate and pick the two units, such as GPM to L/min.
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Formula
result = value × (factor of the from-unit) ÷ (factor of the to-unit), where every factor is the unit expressed in m³/s. For example 1 L/min = 0.001 ÷ 60 m³/s and 1 gal/min = 0.003785411784 ÷ 60 m³/s.
Worked example
Convert 10 gal/min to m³/h: 10 × 3.785411784 L × 60 ÷ 1,000 = 2.2712470704 m³/h. Convert 60 L/min to L/s: 60 ÷ 60 = 1 L/s.
Frequently asked questions
How many litres per minute is 1 GPM?
One US gallon per minute is 3.785411784 litres per minute, so 10 GPM is 37.85 L/min.
How do I convert m³/h to L/min?
Multiply by 1,000 and divide by 60. A pump moving 1 m³/h delivers 1,000 ÷ 60 = 16.67 L/min.
How many L/s is 60 L/min?
Divide litres per minute by 60. So 60 L/min is exactly 1 L/s.
What is CFM in litres per minute?
One cubic foot per minute is 28.316846592 L/min, so a 100 CFM fan moves about 2,831.7 L/min.
Is a UK gallon the same as a US gallon?
No. A UK gallon is 4.54609 L and a US gallon is 3.785411784 L, so 1 UK gal/min is about 1.2 US gal/min.