Quick reference table
Common volume flow rate conversions
| From | To |
|---|---|
| 1 gal/min (US) | 3.785411784 L/min |
| 1 L/min | 0.2641720524 gal/min (US) |
| 1 m³/h | 16.66666667 L/min |
| 1 cfm | 1.699010796 m³/h |
| 1 m³/h | 0.5885777787 cfm |
| 1 L/s | 3.600000000 m³/h |
How to convert volume flow rate
Flow rate is how much liquid or air moves per unit of time. Pumps are rated in L/min or gallons per minute, ventilation in cubic meters per hour or cubic feet per minute (CFM).
Every volume flow rate unit is a fixed multiple of one base unit, the m³/s. To convert a value, multiply it by the size of the starting unit and divide by the size of the target unit. For example, to convert gal/min (US) to L/min, multiply by 3.785411784. To go the other way, divide by 3.785411784.
The converter above does this for you and shows the exact formula under the result.
Worked examples
US gallons per minute to Liters per minute
| US gallons per minute (gal/min (US)) | Liters per minute (L/min) |
|---|---|
| 1 gal/min (US) | 3.785411784 L/min |
| 2 gal/min (US) | 7.570823568 L/min |
| 5 gal/min (US) | 18.92705892 L/min |
| 10 gal/min (US) | 37.85411784 L/min |
| 25 gal/min (US) | 94.63529460 L/min |
| 50 gal/min (US) | 189.2705892 L/min |
| 100 gal/min (US) | 378.5411784 L/min |
| 1,000 gal/min (US) | 3,785.411784 L/min |
Liters per minute to US gallons per minute
| Liters per minute (L/min) | US gallons per minute (gal/min (US)) |
|---|---|
| 1 L/min | 0.2641720524 gal/min (US) |
| 2 L/min | 0.5283441047 gal/min (US) |
| 5 L/min | 1.320860262 gal/min (US) |
| 10 L/min | 2.641720524 gal/min (US) |
| 25 L/min | 6.604301309 gal/min (US) |
| 50 L/min | 13.20860262 gal/min (US) |
| 100 L/min | 26.41720524 gal/min (US) |
| 1,000 L/min | 264.1720524 gal/min (US) |
Volume flow rate units explained
| Unit | Symbol | Equals |
|---|---|---|
| Cubic meters per second | m³/s | 1 m³/s = 1 m³/s |
| Cubic meters per hour | m³/h | 1 m³/h = 0.000277777777778 m³/s |
| Cubic meters per minute | m³/min | 1 m³/min = 0.0166666666667 m³/s |
| Liters per second | L/s | 1 L/s = 0.001 m³/s |
| Liters per minute | L/min | 1 L/min = 0.0000166666666667 m³/s |
| Liters per hour | L/h | 1 L/h = 2.777778 × 10⁻⁷ m³/s |
| Milliliters per minute | mL/min | 1 mL/min = 1.666667 × 10⁻⁸ m³/s |
| US gallons per minute | gal/min (US) | 1 gal/min (US) = 0.0000630901964 m³/s |
| US gallons per hour | gal/h (US) | 1 gal/h (US) = 0.00000105150327333 m³/s |
| Cubic feet per second | ft³/s | 1 ft³/s = 0.028316846592 m³/s |
| Cubic feet per minute | cfm | 1 cfm = 0.0004719474432 m³/s |
| Oil barrels per day (US) | bbl/day | 1 bbl/day = 0.00000184013072833 m³/s |
Popular conversions: cfm to m3/h, gpm to lpm, l/min to m3/h.
Frequently asked questions
How many L/min is 1 m³/h?
One cubic meter per hour is 16.667 liters per minute (1,000 ÷ 60).
How many m³/h is 1 CFM?
One cubic foot per minute is about 1.699 cubic meters per hour.
How do I convert gal/min (US) to L/min?
Multiply the value in gal/min (US) by 3.785411784 to get L/min. For example, 10 gal/min (US) = 37.85411784 L/min.
How many L/min is 1 gal/min (US)?
1 gal/min (US) = 3.785411784 L/min, and 1 L/min = 0.2641720524 gal/min (US).
Does this volume flow rate converter work offline?
Yes. After the page has loaded once, all calculations run in your browser, so it keeps working without an internet connection.