To convert gallons per minute to liters per minute, multiply by 3.785411784.
The calculation uses 1 GPM = 3.785411784 L/min. Results are displayed to at most 10 significant digits. Definitions can be exact while a displayed decimal is rounded. Match the displayed precision to your original measurement.
The formula
GPM- Input unit: gallons per minute
L/min- Output unit: liters per minute
How to use this calculator
- Enter a value in GPM.
- Multiply by the stored conversion factor.
- Read the result in L/min; divide by the same factor to convert back.
Worked examples
Worked conversion
1 GPM × 3.785411784 ≈ 3.785411784 L/min.
Reverse conversion
3.785411784 L/min ÷ 3.785411784 ≈ 1 GPM. Rounding intermediate values can change the last displayed digit.
Frequently asked questions
What factor does this converter use?
It uses 3.785411784 L/min per GPM.
Why can another converter show a slightly different answer?
Check the unit convention first (such as US versus Imperial or decimal versus binary), then compare rounding. Measurement uncertainty is separate from the unit conversion.
GPM to L/min table
| GPM | L/min (rounded) |
|---|---|
| 0 | 0 |
| 1 | 3.785411784 |
| 2 | 7.570823568 |
| 5 | 18.92705892 |
| 10 | 37.85411784 |
| 100 | 378.5411784 |