Imperial gallons per minute to liters per minute
Type a value in imperial gallons per minute to see it in liters per minute straight away, or type in the second box to convert back.
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How to use it
- Type the value in the imperial gallons per minute box.
- Read the result in liters per minute as you type, and pick the precision you need.
- Swap the direction to convert back, or copy the result.
How it is calculated
L/min = gpm (imp) × 4.54609
Multiply the value in imperial gallons per minute by 4.54609 to get liters per minute.
Example
To convert 25 gpm (imp) to liters per minute: 25 × 4.54609 = 113.652 L/min.
Conversion table
| Imperial gallons per minute (gpm (imp)) | Liters per minute (L/min) |
|---|---|
| 1 | 4.54609 |
| 2 | 9.09218 |
| 3 | 13.6383 |
| 5 | 22.7305 |
| 10 | 45.4609 |
| 20 | 90.9218 |
| 25 | 113.652 |
| 50 | 227.305 |
| 100 | 454.609 |
| 250 | 1,136.52 |
| 500 | 2,273.04 |
| 1,000 | 4,546.09 |
About the units
- Imperial gallon per minute
- One imperial gallon (4.54609 L) passing each minute, found on older British equipment.
- Liter per minute
- One liter passing each minute, the usual unit for taps, showers, home pumps and medical oxygen.
Limits and caveats
- Results are rounded for display and computed with the browser's floating point precision (about 15 significant digits).
- Both unit factors are exact by their official definitions.
Questions about this tool
How many liters per minute are in one imperial gallon per minute?
1 gpm (imp) = 4.54609 L/min exactly.
How do I convert imperial gallons per minute to liters per minute?
Use L/min = gpm (imp) × 4.54609. For example, 25 gpm (imp) = 113.652 L/min.
How many imperial gallons per minute are in one liter per minute?
1 L/min = 0.219969 gpm (imp).
How do I convert liters per minute to US gallons per minute?
One US gallon per minute is exactly 3.785411784 L/min, so divide the liters figure by 3.785411784. For example, 20 L/min is about 5.28 US gpm.
What does CFM mean on AC units and fans?
CFM stands for cubic feet per minute and describes how much air a unit moves. One CFM equals 1.69901079552 cubic meters per hour or 0.4719474432 liters per second.