Flow Rate Converter (L/min, GPM, m³/h, CFM)
Flow rate converter: liters per minute, gallons per minute (GPM), cubic meters per hour, liters per second and CFM.
How to use this calculator
- Type the value you want to convert.
- Choose the unit you are converting from and the one you want.
- Read the result, or the full table of equivalent units below.
Volumetric flow rate is volume per time. Plumbing and pumps often use GPM or L/min; HVAC airflow uses CFM or m³/h.
1 US GPM = 3.785 L/min.
Conversion formula
1 gal/min = 3.78541 L/min · 1 L/min = 0.264172 gal/min
Common conversions: US gallon per minute → liter per minute
| gal/min | L/min |
|---|---|
| 1 gal/min | 3.78541 L/min |
| 2 gal/min | 7.57082 L/min |
| 5 gal/min | 18.9271 L/min |
| 10 gal/min | 37.8541 L/min |
| 20 gal/min | 75.7082 L/min |
| 50 gal/min | 189.271 L/min |
| 100 gal/min | 378.541 L/min |
| 1 000 gal/min | 3 785.41 L/min |
Frequently asked questions
How many L/min is 10 GPM?
37.85 L/min.