Gallon (UK) per Minute to Gallon (US) per Minute (imp gal/min to GPM)
Convert imp gal/min to GPM — Flow Rate converter
One gallon (UK) per minute equals 1.20095 GPM, so to convert gallons (UK) per minute to gallons (US) per minute you multiply the value by 1.20095. A gallon (UK) per minute is larger than a gallon (US) per minute — going the other way, 1 GPM = 0.83267393 imp gal/min. For example, 10 imp gal/min = 12.009503 GPM and 50 imp gal/min = 60.047515 GPM.
1 imp gal/min = 1.20095 GPM
Gallon (UK) per Minute to Gallon (US) per Minute formula
1 Gallon (UK) per Minute = 1.20095 GPM
Worked examples
- 25 imp gal/min = 30.023757 GPM
- 100 imp gal/min = 120.09503 GPM
Gallon (UK) per Minute to Gallon (US) per Minute conversion table
| Gallon (UK) per Minute (imp gal/min) | Gallon (US) per Minute (GPM) |
|---|---|
| 1 | 1.20095 |
| 2 | 2.401901 |
| 3 | 3.602851 |
| 5 | 6.004751 |
| 8 | 9.607602 |
| 10 | 12.009503 |
| 12 | 14.411404 |
| 15 | 18.014254 |
| 20 | 24.019006 |
| 25 | 30.023757 |
| 50 | 60.047515 |
| 100 | 120.09503 |
| 250 | 300.237574 |
| 500 | 600.475148 |
| 1000 | 1200.95 |
Which gallon, and which trade
The single most expensive mistake in flow conversion is the gallon. A US liquid gallon is 3.785411784 litres; an imperial gallon is 4.54609 litres. US GPM and imperial GPM differ by about 20%, and pump datasheets frequently do not say which one they mean. Check the manufacturer's country of origin before trusting a GPM figure.
Different trades default to different units for the same physical quantity: HVAC and compressed air work in CFM, plumbing and pumps in GPM or LPM, and process and water engineering in m³/h or L/s. A specification that mixes them is usually quoting different equipment, not different flows. On this page, 1 imp gal/min = 1.20095 GPM.
Frequently asked questions
How many gallons (US) per minute are in one gallon (UK) per minute?
One gallon (UK) per minute equals 1.20095 gallons (US) per minute (GPM).
How many gallons (UK) per minute are in one gallon (US) per minute?
One gallon (US) per minute equals 0.83267393 gallons (UK) per minute (imp gal/min).
How do you convert gallons (UK) per minute to gallons (US) per minute?
1 Gallon (UK) per Minute = 1.20095 GPM. Use the calculator above for any value.
What is 5 imp gal/min in GPM?
5 imp gal/min = 6.004751 GPM.
What is 100 imp gal/min in GPM?
100 imp gal/min = 120.09503 GPM.
What is 10 imp gal/min in GPM?
10 imp gal/min = 12.009503 GPM.
What is 20 imp gal/min in GPM?
20 imp gal/min = 24.019006 GPM.
What is 50 imp gal/min in GPM?
50 imp gal/min = 60.047515 GPM.
What is 500 imp gal/min in GPM?
500 imp gal/min = 600.475148 GPM.
Is a gallon (UK) per minute bigger than a gallon (US) per minute?
Yes. A gallon (UK) per minute is larger — one gallon (UK) per minute equals 1.20095 gallons (US) per minute (GPM).