Liter per Hour to Gallon (US) per Hour (LPH to gal/h)
Convert LPH to gal/h — Flow Rate converter
One liter per hour equals 0.26417205 gal/h, so to convert liters per hour to gallons (US) per hour you multiply the value by 0.26417205. A liter per hour is smaller than a gallon (US) per hour — going the other way, 1 gal/h = 3.785412 LPH. For example, 10 LPH = 2.641721 gal/h and 50 LPH = 13.208603 gal/h.
1 LPH = 0.26417205 gal/h
Liter per Hour to Gallon (US) per Hour formula
1 Liter per Hour = 0.26417205 gal/h
Worked examples
- 25 LPH = 6.604301 gal/h
- 100 LPH = 26.417205 gal/h
Liter per Hour to Gallon (US) per Hour conversion table
| Liter per Hour (LPH) | Gallon (US) per Hour (gal/h) |
|---|---|
| 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 LPH = 0.26417205 gal/h.
Frequently asked questions
How many gallons (US) per hour are in one liter per hour?
One liter per hour equals 0.26417205 gallons (US) per hour (gal/h).
How many liters per hour are in one gallon (US) per hour?
One gallon (US) per hour equals 3.785412 liters per hour (LPH).
How do you convert liters per hour to gallons (US) per hour?
1 Liter per Hour = 0.26417205 gal/h. Use the calculator above for any value.
What is 5 LPH in gal/h?
5 LPH = 1.32086 gal/h.
What is 100 LPH in gal/h?
100 LPH = 26.417205 gal/h.
What is 10 LPH in gal/h?
10 LPH = 2.641721 gal/h.
What is 20 LPH in gal/h?
20 LPH = 5.283441 gal/h.
What is 50 LPH in gal/h?
50 LPH = 13.208603 gal/h.
What is 500 LPH in gal/h?
500 LPH = 132.086026 gal/h.
Is a liter per hour bigger than a gallon (US) per hour?
No. A liter per hour is smaller — one liter per hour equals 0.26417205 gallons (US) per hour, while one gallon (US) per hour equals 3.785412 liters per hour.