Gallon (US) per Hour to Gallon (UK) per Minute (gal/h to imp gal/min)
Convert gal/h to imp gal/min — Flow Rate converter
One gallon (US) per hour equals 0.0138779 imp gal/min, so to convert gallons (US) per hour to gallons (UK) per minute you multiply the value by 0.0138779. A gallon (US) per hour is smaller than a gallon (UK) per minute — going the other way, 1 imp gal/min = 72.057018 gal/h. For example, 10 gal/h = 0.13877899 imp gal/min and 50 gal/h = 0.69389494 imp gal/min.
1 gal/h = 0.0138779 imp gal/min
Gallon (US) per Hour to Gallon (UK) per Minute formula
1 Gallon (US) per Hour = 0.0138779 imp gal/min
Worked examples
- 25 gal/h = 0.34694747 imp gal/min
- 100 gal/h = 1.38779 imp gal/min
Gallon (US) per Hour to Gallon (UK) per Minute conversion table
| Gallon (US) per Hour (gal/h) | Gallon (UK) per Minute (imp gal/min) |
|---|---|
| 1 | 0.0138779 |
| 2 | 0.0277558 |
| 3 | 0.0416337 |
| 5 | 0.06938949 |
| 8 | 0.11102319 |
| 10 | 0.13877899 |
| 12 | 0.16653479 |
| 15 | 0.20816848 |
| 20 | 0.27755798 |
| 25 | 0.34694747 |
| 50 | 0.69389494 |
| 100 | 1.38779 |
| 250 | 3.469475 |
| 500 | 6.938949 |
| 1000 | 13.877899 |
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 gal/h = 0.0138779 imp gal/min.
Frequently asked questions
How many gallons (UK) per minute are in one gallon (US) per hour?
One gallon (US) per hour equals 0.0138779 gallons (UK) per minute (imp gal/min).
How many gallons (US) per hour are in one gallon (UK) per minute?
One gallon (UK) per minute equals 72.057018 gallons (US) per hour (gal/h).
How do you convert gallons (US) per hour to gallons (UK) per minute?
1 Gallon (US) per Hour = 0.0138779 imp gal/min. Use the calculator above for any value.
What is 5 gal/h in imp gal/min?
5 gal/h = 0.06938949 imp gal/min.
What is 100 gal/h in imp gal/min?
100 gal/h = 1.38779 imp gal/min.
What is 10 gal/h in imp gal/min?
10 gal/h = 0.13877899 imp gal/min.
What is 20 gal/h in imp gal/min?
20 gal/h = 0.27755798 imp gal/min.
What is 50 gal/h in imp gal/min?
50 gal/h = 0.69389494 imp gal/min.
What is 500 gal/h in imp gal/min?
500 gal/h = 6.938949 imp gal/min.
Is a gallon (US) per hour bigger than a gallon (UK) per minute?
No. A gallon (US) per hour is smaller — one gallon (US) per hour equals 0.0138779 gallons (UK) per minute, while one gallon (UK) per minute equals 72.057018 gallons (US) per hour.