US gallons per minute to imperial gallons per minute
Type a value in US gallons per minute to see it in imperial gallons per minute straight away, or type in the second box to convert back.
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Processing and privacy: The result is calculated inside your browser and your data is not sent to any server.
How to use it
- Type the value in the US gallons per minute box.
- Read the result in imperial gallons 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
gpm (imp) = gpm (US) × 0.8326741846
Multiply the value in US gallons per minute by 0.8326741846 to get imperial gallons per minute.
Example
To convert 25 gpm (US) to imperial gallons per minute: 25 × 0.8326741846 = 20.8169 gpm (imp).
Conversion table
| US gallons per minute (gpm (US)) | Imperial gallons per minute (gpm (imp)) |
|---|---|
| 1 | 0.832674 |
| 2 | 1.66535 |
| 3 | 2.49802 |
| 5 | 4.16337 |
| 10 | 8.32674 |
| 20 | 16.6535 |
| 25 | 20.8169 |
| 50 | 41.6337 |
| 100 | 83.2674 |
| 250 | 208.169 |
| 500 | 416.337 |
| 1,000 | 832.674 |
About the units
- US gallon per minute
- One US gallon (3.785411784 L) passing each minute, a common unit on US pump specifications.
- Imperial gallon per minute
- One imperial gallon (4.54609 L) passing each minute, found on older British equipment.
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 imperial gallons per minute are in one US gallon per minute?
1 gpm (US) = 0.832674 gpm (imp) exactly.
How do I convert US gallons per minute to imperial gallons per minute?
Use gpm (imp) = gpm (US) × 0.8326741846. For example, 25 gpm (US) = 20.8169 gpm (imp).
How many US gallons per minute are in one imperial gallon per minute?
1 gpm (imp) = 1.20095 gpm (US).
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.