Gallons to Litres Converter
Convert gallons to litres instantly. Defaults to US gallons — use the unit selector to switch to UK gallons. Reference table covers common fuel and container volumes.
Formula:[value] gal × 3.785 = [result] L
How to convert Gallons to Litres
gal × 3.785 = L
For example: 5 gal × 3.785 = 18.93 L
↑ Use the converter aboveCommon Gallons to Litres conversions
| Gallons (gal) | Litres (L) |
|---|---|
| 0.5 gal | 1.893 L |
| 1 gal | 3.785 L |
| 2 gal | 7.571 L |
| 5 gal | 18.93 L |
| 10 gal | 37.85 L |
| 15 gal | 56.78 L |
| 20 gal | 75.71 L |
| 50 gal | 189.3 L |
| 100 gal | 378.5 L |
About this conversion
Gallons to litres is commonly needed for fuel quantities, large liquid containers, and US-to-metric recipe scaling. The US liquid gallon (3.785 L) and UK imperial gallon (4.546 L) are different units — use the unit dropdown to select the correct one. Common volumes: 1 US gal = 3.785 L, 5 US gal = 18.93 L, 10 US gal = 37.85 L. Car fuel tanks in the US are rated in gallons — a 15-gallon tank holds about 56.8 litres. In the UK, fuel is sold in litres but older cars may have tank sizes listed in imperial gallons. US recipe cups and gallons can be converted to litres for metric kitchens.