GPM to LPM Converter
Convert between gallons per minute and liters per minute
Flow Rate Conversion
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Conversion Result
1 gpm ≈ 3.78541 lpm
Convert Gallons per Minute (GPM) to Liters per Minute (LPM)
Need to convert flow rates from US gallons per minute (GPM) to liters per minute (LPM)? Use this reference chart and formula breakdown to quickly and accurately perform GPM to LPM conversions for plumbing, engineering, and fluid handling applications.
GPM to LPM Conversion Table
| Gallons per Minute (GPM) | Liters per Minute (LPM) |
|---|---|
| 0.01 GPM | 0.0378541178 LPM |
| 0.1 GPM | 0.3785411784 LPM |
| 1 GPM | 3.785411784 LPM |
| 2 GPM | 7.570823568 LPM |
| 3 GPM | 11.356235352 LPM |
| 5 GPM | 18.92705892 LPM |
| 10 GPM | 37.85411784 LPM |
| 20 GPM | 75.70823568 LPM |
| 50 GPM | 189.2705892 LPM |
| 100 GPM | 378.5411784 LPM |
| 1000 GPM | 3785.411784 LPM |
How to Convert GPM to LPM
To convert US gallons per minute (GPM) to liters per minute (LPM), multiply the flow rate by the conversion factor:
1 GPM = 3.785411784 LPM
So the formula is:
LPM = GPM × 3.785411784
If you need to go the other direction:
GPM = LPM × 0.2641720524
Example: Convert 15 GPM to LPM
15 × 3.785411784 = 56.78117676 LPM
So, 15 GPM is approximately 56.78 LPM.
What Is GPM (Gallons per Minute)?
Gallons per minute (GPM) is a unit of volumetric flow rate used commonly in the United States. It measures how many US gallons of liquid move past a point in one minute.
- 1 US gallon = 3.785411784 liters
- GPM is widely used in plumbing fixtures, pumps, and irrigation systems.
What Is LPM (Liters per Minute)?
Liters per minute (LPM) measures flow in the metric system, showing how many liters of fluid pass a point each minute.
- 1 liter = 0.264172 US gallons
- LPM is used globally in engineering, automotive, and medical equipment specifications.
Applications of GPM to LPM Conversion
- Plumbing systems with mixed unit specs (e.g., US-made pumps in metric-based systems)
- Water treatment and irrigation design
- International equipment compatibility
- HVAC and industrial flow rate monitoring