How to Convert US Gallons to Liters

Formula: liters = US gallons × 3.78541

To convert US gallons to liters, multiply by 3.78541. One US gallon equals exactly 231 cubic inches. Note that Imperial (UK) gallons are larger at 4.546 liters.

US GallonsLiters
1 gal3.785 L
2 gal7.571 L
5 gal18.927 L
10 gal37.854 L
20 gal75.708 L
50 gal189.271 L