Gallon (US) per Minute to Milliliter per Second (GPM to mL/s)
Convert GPM to mL/s — Flow Rate converter
One gallon (US) per minute equals 63.090196 mL/s, so to convert gallons (US) per minute to milliliters per second you multiply the value by 63.090196. A gallon (US) per minute is larger than a milliliter per second — going the other way, 1 mL/s = 0.01585032 GPM. For example, 10 GPM = 630.901964 mL/s and 50 GPM = 3154.51 mL/s.
1 GPM = 63.090196 mL/s
Gallon (US) per Minute to Milliliter per Second formula
1 Gallon (US) per Minute = 63.090196 mL/s
Worked examples
- 25 GPM = 1577.25 mL/s
- 100 GPM = 6309.02 mL/s
Gallon (US) per Minute to Milliliter per Second conversion table
| Gallon (US) per Minute (GPM) | Milliliter per Second (mL/s) |
|---|---|
| 1 | 63.090196 |
| 2 | 126.180393 |
| 3 | 189.270589 |
| 5 | 315.450982 |
| 8 | 504.721571 |
| 10 | 630.901964 |
| 12 | 757.082357 |
| 15 | 946.352946 |
| 20 | 1261.8 |
| 25 | 1577.25 |
| 50 | 3154.51 |
| 100 | 6309.02 |
| 250 | 15772.55 |
| 500 | 31545.1 |
| 1000 | 63090.2 |
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 = 63.090196 mL/s.
Frequently asked questions
How many milliliters per second are in one gallon (US) per minute?
One gallon (US) per minute equals 63.090196 milliliters per second (mL/s).
How many gallons (US) per minute are in one milliliter per second?
One milliliter per second equals 0.01585032 gallons (US) per minute (GPM).
How do you convert gallons (US) per minute to milliliters per second?
1 Gallon (US) per Minute = 63.090196 mL/s. Use the calculator above for any value.
What is 5 GPM in mL/s?
5 GPM = 315.450982 mL/s.
What is 100 GPM in mL/s?
100 GPM = 6309.02 mL/s.
What is 10 GPM in mL/s?
10 GPM = 630.901964 mL/s.
What is 20 GPM in mL/s?
20 GPM = 1261.8 mL/s.
What is 50 GPM in mL/s?
50 GPM = 3154.51 mL/s.
What is 500 GPM in mL/s?
500 GPM = 31545.1 mL/s.
Is a gallon (US) per minute bigger than a milliliter per second?
Yes. A gallon (US) per minute is larger — one gallon (US) per minute equals 63.090196 milliliters per second (mL/s).