Reference chart

US Gallons to Liters Chart

Use this chart when a project quantity or container is expressed in US gallons and a Metric document uses liters.

Quick answer

One US liquid gallon equals exactly 3.785411784 liters.

US gallonsLiters
1 gal3.785 L
2 gal7.571 L
3 gal11.356 L
5 gal18.927 L
10 gal37.854 L
15 gal56.781 L
20 gal75.708 L
25 gal94.635 L
30 gal113.562 L
40 gal151.416 L
50 gal189.271 L
75 gal283.906 L
100 gal378.541 L

How to use this chart

  1. Find the US gallon quantity.
  2. Read the liter equivalent.
  3. Confirm that the source really uses US liquid gallons rather than another gallon definition.
Data basis

Generated from the exact US liquid gallon definition used in the converter.

Planning context

Pipe Inside Diameter & Volume Guide

Use actual inside diameter and developed length when calculating liquid volume contained in pipe.

Read guide