Gallon (US) per Second to Liter per Hour (gal/s to LPH)
Convert gal/s to LPH — Flow Rate converter
One gallon (US) per second equals 13627.48 LPH, so to convert gallons (US) per second to liters per hour you multiply the value by 13627.48. A gallon (US) per second is larger than a liter per hour — going the other way, 1 LPH = 0.0000733811 gal/s. For example, 10 gal/s = 136274.82 LPH and 50 gal/s = 681374.12 LPH.
1 gal/s = 13627.48 LPH
Gallon (US) per Second to Liter per Hour formula
1 Gallon (US) per Second = 13627.48 LPH
Worked examples
- 25 gal/s = 340687.06 LPH
- 100 gal/s = 1362748.24 LPH
Gallon (US) per Second to Liter per Hour conversion table
| Gallon (US) per Second (gal/s) | Liter per Hour (LPH) |
|---|---|
| 1 | 13627.48 |
| 2 | 27254.96 |
| 3 | 40882.45 |
| 5 | 68137.41 |
| 8 | 109019.86 |
| 10 | 136274.82 |
| 12 | 163529.79 |
| 15 | 204412.24 |
| 20 | 272549.65 |
| 25 | 340687.06 |
| 50 | 681374.12 |
| 100 | 1362748.24 |
| 250 | 3406870.61 |
| 500 | 6813741.21 |
| 1000 | 13627482.42 |
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/s = 13627.48 LPH.
Frequently asked questions
How many liters per hour are in one gallon (US) per second?
One gallon (US) per second equals 13627.48 liters per hour (LPH).
How many gallons (US) per second are in one liter per hour?
One liter per hour equals 0.0000733811 gallons (US) per second (gal/s).
How do you convert gallons (US) per second to liters per hour?
1 Gallon (US) per Second = 13627.48 LPH. Use the calculator above for any value.
What is 5 gal/s in LPH?
5 gal/s = 68137.41 LPH.
What is 100 gal/s in LPH?
100 gal/s = 1362748.24 LPH.
What is 10 gal/s in LPH?
10 gal/s = 136274.82 LPH.
What is 20 gal/s in LPH?
20 gal/s = 272549.65 LPH.
What is 50 gal/s in LPH?
50 gal/s = 681374.12 LPH.
What is 500 gal/s in LPH?
500 gal/s = 6813741.21 LPH.
Is a gallon (US) per second bigger than a liter per hour?
Yes. A gallon (US) per second is larger — one gallon (US) per second equals 13627.48 liters per hour (LPH).