LPM to GPM Converter
1 liter equals 0.264172 US gallons. The per-minute rates share the same time base, so the conversion factor is simply the gallon-to-liter ratio. This is useful when metric pump...
Formula
Source: NIST | Last reviewed: June 7, 2026
Examples
1 L/min
= 0.2642 GPM (US)
1 LPM = 0.2642 GPM
100 L/min
= 26.42 GPM (US)
378.5 L/min
= 100 GPM (US)
378.5 LPM = 100 GPM
Quick Reference Table
| LPM | GPM |
|---|---|
| 1 | 0.26 |
| 10 | 2.64 |
| 50 | 13.21 |
| 100 | 26.42 |
| 200 | 52.83 |
| 500 | 132.09 |
Where is this used?
Sizing US-made pumps for metric piping systems.
Water treatment and chemical feed applications.
Frequently Asked Questions
How do I convert GPM back to LPM?
Divide GPM by 0.264172. For quick estimates, multiply GPM by 3.785 to get LPM.
Does this work for Imperial gallons?
No. Imperial GPM uses a different factor (1 Imp GPM = 4.546 LPM). This converter uses US gallons. Use the Imp GPM to US GPM converter if needed.
How does LPM relate to m³/h?
Multiply LPM by 0.06 to get m³/h. So 100 LPM = 6 m³/h.
Reviewed for accuracy
· Last reviewed: June 7, 2026
All calculations are for reference only. Always verify with manufacturer data and a qualified engineer for critical applications. Learn about our editorial process.