Litres Per Minute to Gallons Per Hour Converter
Instantly convert Litres per minute (L/min) to Gallons per hour (gal/hr) and vice versa. Accurate, free flow rate calculator for pumps, taps, hoses and irrigation, in US or UK gallons.
Convert Flow Rate Units
Enter a flow rate below to get an instant, precise conversion between Litres per minute and Gallons per hour, in either US or UK measure.
Flow Rate Converter
Enter the value to see the converted flow rate
Converted Flow Rate
Based on exact US and UK gallon definitions
Common L/min to Gal/hr Conversions
Standard conversions for quick lookup when sizing pumps, tanks, taps or irrigation systems.
| Litres Per Minute | US Gallons Per Hour | UK Gallons Per Hour | Common Use Case |
|---|---|---|---|
| 1 L/min | 15.85 gal/hr | 13.20 gal/hr | Dripper or slow leak |
| 5 L/min | 79.25 gal/hr | 65.99 gal/hr | Bathroom tap |
| 10 L/min | 158.50 gal/hr | 131.98 gal/hr | Kitchen tap or shower head |
| 15 L/min | 237.75 gal/hr | 197.97 gal/hr | Washing machine fill valve |
| 25 L/min | 396.26 gal/hr | 329.94 gal/hr | Garden hose, full flow |
| 50 L/min | 792.52 gal/hr | 659.89 gal/hr | Domestic well pump |
| 100 L/min | 1,585.03 gal/hr | 1,319.78 gal/hr | Small irrigation pump |
| 500 L/min | 7,925.17 gal/hr | 6,598.89 gal/hr | Fire hose or industrial pump |
Flow Rate Conversion FAQ
Everything you need to know about converting between litres per minute and gallons per hour.
First multiply the litres per minute value by 60 to get litres per hour, then divide by the litres in one gallon. For US liquid gallons, divide by 3.785411784. For UK imperial gallons, divide by 4.54609. For example, 10 L/min equals 158.5 US gal/hr or 132.0 UK gal/hr.
A US liquid gallon is 3.785411784 litres, while a UK imperial gallon is 4.54609 litres, making the UK gallon about 20% larger. Because of this, the same flow rate produces a smaller number of UK gallons per hour than US gallons per hour.
Flow meters, taps and pump datasheets often report short-term flow in litres per minute, but tank filling times, water bills and irrigation planning are usually calculated in gallons per hour. Converting to an hourly rate makes it easier to size tanks, pumps and billing periods.
A standard kitchen tap flows at around 6 to 8 litres per minute, a shower head around 8 to 10 litres per minute, a garden hose around 10 to 15 litres per minute, and a domestic washing machine fill valve around 12 to 15 litres per minute.