Liter per Minute to Gallon (US) per Minute (LPM to GPM)
Convert LPM to GPM — Flow Rate converter
One liter per minute equals 0.26417205 GPM, so to convert liters per minute to gallons (US) per minute you multiply the value by 0.26417205. A liter per minute is smaller than a gallon (US) per minute — going the other way, 1 GPM = 3.785412 LPM. For example, 10 LPM = 2.641721 GPM and 50 LPM = 13.208603 GPM.
1 LPM = 0.26417205 GPM
Liter per Minute to Gallon (US) per Minute formula
1 Liter per Minute = 0.26417205 GPM
Worked examples
- 25 LPM = 6.604301 GPM
- 100 LPM = 26.417205 GPM
Liter per Minute to Gallon (US) per Minute conversion table
| Liter per Minute (LPM) | Gallon (US) per Minute (GPM) |
|---|---|
| 1 | 0.26417205 |
| 2 | 0.5283441 |
| 3 | 0.79251616 |
| 5 | 1.32086 |
| 8 | 2.113376 |
| 10 | 2.641721 |
| 12 | 3.170065 |
| 15 | 3.962581 |
| 20 | 5.283441 |
| 25 | 6.604301 |
| 50 | 13.208603 |
| 100 | 26.417205 |
| 250 | 66.043013 |
| 500 | 132.086026 |
| 1000 | 264.172052 |
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 LPM = 0.26417205 GPM.
For quick mental work, GPM × 3.8 gets you within half a percent of LPM, and LPM ÷ 4 is a usable field approximation in the other direction.
Frequently asked questions
How many gallons (US) per minute are in one liter per minute?
One liter per minute equals 0.26417205 gallons (US) per minute (GPM).
How many liters per minute are in one gallon (US) per minute?
One gallon (US) per minute equals 3.785412 liters per minute (LPM).
How do you convert liters per minute to gallons (US) per minute?
1 Liter per Minute = 0.26417205 GPM. Use the calculator above for any value.
What is 5 LPM in GPM?
5 LPM = 1.32086 GPM.
What is 100 LPM in GPM?
100 LPM = 26.417205 GPM.
What is 10 LPM in GPM?
10 LPM = 2.641721 GPM.
What is 20 LPM in GPM?
20 LPM = 5.283441 GPM.
What is 50 LPM in GPM?
50 LPM = 13.208603 GPM.
What is 500 LPM in GPM?
500 LPM = 132.086026 GPM.
Is a liter per minute bigger than a gallon (US) per minute?
No. A liter per minute is smaller — one liter per minute equals 0.26417205 gallons (US) per minute, while one gallon (US) per minute equals 3.785412 liters per minute.