Gallons to Liters

Convert US gallons to liters instantly. Enter any volume in gallons and see the equivalent in liters with a visual comparison.

1 gal × 3.78541 = 3.7854 L

Result

3.7854 L

L = gal × 3.78541

US Gallons (gal)1 gal=Liters (L)3.7854 L

About this calculator

One US gallon equals approximately 3.785 liters. This converter uses the US liquid gallon (3.78541 L), not the imperial gallon (4.546 L). Useful for converting fuel economy, milk jugs, water bottles, and cooking measurements from US recipes to metric quantities.

Common examples

  • 1 gal = 3.7854 L
  • 2 gal = 7.5708 L
  • 5 gal = 18.9271 L
  • 10 gal = 37.8541 L
  • 20 gal = 75.7082 L