Gallon (US) per Minute to Gallon (US) per Second (GPM to gal/s)
Convert GPM to gal/s — Flow Rate converter
One gallon (US) per minute equals 0.01666667 gal/s, so to convert gallons (US) per minute to gallons (US) per second you multiply the value by 0.01666667. A gallon (US) per minute is smaller than a gallon (US) per second — going the other way, 1 gal/s = 60 GPM. For example, 10 GPM = 0.16666667 gal/s and 50 GPM = 0.83333333 gal/s.
1 GPM = 0.01666667 gal/s
Gallon (US) per Minute to Gallon (US) per Second formula
1 Gallon (US) per Minute = 0.01666667 gal/s
Worked examples
- 25 GPM = 0.41666667 gal/s
- 100 GPM = 1.666667 gal/s
Gallon (US) per Minute to Gallon (US) per Second conversion table
| Gallon (US) per Minute (GPM) | Gallon (US) per Second (gal/s) |
|---|---|
| 1 | 0.01666667 |
| 2 | 0.03333333 |
| 3 | 0.05 |
| 5 | 0.08333333 |
| 8 | 0.13333333 |
| 10 | 0.16666667 |
| 12 | 0.2 |
| 15 | 0.25 |
| 20 | 0.33333333 |
| 25 | 0.41666667 |
| 50 | 0.83333333 |
| 100 | 1.666667 |
| 250 | 4.166667 |
| 500 | 8.333333 |
| 1000 | 16.666667 |
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 GPM = 0.01666667 gal/s.
Frequently asked questions
How many gallons (US) per second are in one gallon (US) per minute?
One gallon (US) per minute equals 0.01666667 gallons (US) per second (gal/s).
How many gallons (US) per minute are in one gallon (US) per second?
One gallon (US) per second equals 60 gallons (US) per minute (GPM).
How do you convert gallons (US) per minute to gallons (US) per second?
1 Gallon (US) per Minute = 0.01666667 gal/s. Use the calculator above for any value.
What is 5 GPM in gal/s?
5 GPM = 0.08333333 gal/s.
What is 100 GPM in gal/s?
100 GPM = 1.666667 gal/s.
What is 10 GPM in gal/s?
10 GPM = 0.16666667 gal/s.
What is 20 GPM in gal/s?
20 GPM = 0.33333333 gal/s.
What is 50 GPM in gal/s?
50 GPM = 0.83333333 gal/s.
What is 500 GPM in gal/s?
500 GPM = 8.333333 gal/s.
Is a gallon (US) per minute bigger than a gallon (US) per second?
No. A gallon (US) per minute is smaller — one gallon (US) per minute equals 0.01666667 gallons (US) per second, while one gallon (US) per second equals 60 gallons (US) per minute.