Flow RateConversion Formulas & Examples
Gallon per minute (US) → Liter per minute
1 gpm = 3.7854 L/minExample: 10 gpm = 37.8541 L/min
Liter per minute → Gallon per minute (US)
1 L/min = 0.26417 gpmExample: 10 L/min = 2.6417 gpm
Frequently Asked Questions
Q.How do I convert Liters per second (L/s) to US Gallons per minute (GPM)?
Multiply the L/s value by 15.850323. For example, 10 L/s = 158.503 GPM (US).
Q.How many cubic meters per hour (m³/h) are in 1 L/s?
Exactly 3.6 m³/h. Since 1 m³ = 1,000 liters and 1 hour = 3,600 seconds, 1 L/s converts directly to 3.6 m³/h.
Q.What is the difference between US GPM and Imperial GPM?
1 US gallon is 3.78541 liters, whereas 1 Imperial (UK) gallon is 4.54609 liters. Therefore, 1 US GPM ≈ 0.8327 Imperial GPM.
Q.Is volumetric flow rate the same as mass flow rate?
No. Volumetric flow rate measures volume per unit time (e.g., L/s, GPM), while mass flow rate measures mass per unit time (e.g., kg/s, lb/min), depending on fluid density.