Gallon (US) per Hour to Liter per Minute (gal/h to LPM)
Convert gal/h to LPM — Flow Rate converter
One gallon (US) per hour equals 0.0630902 LPM, so to convert gallons (US) per hour to liters per minute you multiply the value by 0.0630902. A gallon (US) per hour is smaller than a liter per minute — going the other way, 1 LPM = 15.850323 gal/h. For example, 10 gal/h = 0.63090196 LPM and 50 gal/h = 3.15451 LPM.
1 gal/h = 0.0630902 LPM
Gallon (US) per Hour to Liter per Minute formula
1 Gallon (US) per Hour = 0.0630902 LPM
Worked examples
- 25 gal/h = 1.577255 LPM
- 100 gal/h = 6.30902 LPM
Gallon (US) per Hour to Liter per Minute conversion table
| Gallon (US) per Hour (gal/h) | Liter per Minute (LPM) |
|---|---|
| 1 | 0.0630902 |
| 2 | 0.12618039 |
| 3 | 0.18927059 |
| 5 | 0.31545098 |
| 8 | 0.50472157 |
| 10 | 0.63090196 |
| 12 | 0.75708236 |
| 15 | 0.94635295 |
| 20 | 1.261804 |
| 25 | 1.577255 |
| 50 | 3.15451 |
| 100 | 6.30902 |
| 250 | 15.772549 |
| 500 | 31.545098 |
| 1000 | 63.090196 |
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 = 0.0630902 LPM.
Frequently asked questions
How many liters per minute are in one gallon (US) per hour?
One gallon (US) per hour equals 0.0630902 liters per minute (LPM).
How many gallons (US) per hour are in one liter per minute?
One liter per minute equals 15.850323 gallons (US) per hour (gal/h).
How do you convert gallons (US) per hour to liters per minute?
1 Gallon (US) per Hour = 0.0630902 LPM. Use the calculator above for any value.
What is 5 gal/h in LPM?
5 gal/h = 0.31545098 LPM.
What is 100 gal/h in LPM?
100 gal/h = 6.30902 LPM.
What is 10 gal/h in LPM?
10 gal/h = 0.63090196 LPM.
What is 20 gal/h in LPM?
20 gal/h = 1.261804 LPM.
What is 50 gal/h in LPM?
50 gal/h = 3.15451 LPM.
What is 500 gal/h in LPM?
500 gal/h = 31.545098 LPM.
Is a gallon (US) per hour bigger than a liter per minute?
No. A gallon (US) per hour is smaller — one gallon (US) per hour equals 0.0630902 liters per minute, while one liter per minute equals 15.850323 gallons (US) per hour.