Direct conversion
Convert gallon (US) [gal US] to liter [L] instantly with formula, examples, chart, and FAQs.
1 gallon (US) [gal US] = 3.785412 liter [L]
1 gallon (US) [gal US] = 3.785412 liter [L]
Example: 1 gallon (US) [gal US] equals 3.785412 liter [L].
Volume conversions use cubic metre as the reference unit. US liquid units, metric litres, and cubic units are converted with fixed factors stored in the unit table.
Displayed results are rounded for readability. The calculator keeps enough precision for everyday use and switches to scientific notation for very large or very small values. Last reviewed: 2026-05-21.
The US gallon is a liquid volume unit equal to exactly 3.785411784 liters.
HistoryThe US gallon developed from older English wine-gallon measures and differs from the UK imperial gallon.
Current useUS gallons are common for fuel, water, paint, tanks, pools, and household liquid measurements in the United States.
The liter is a metric volume unit equal to one cubic decimeter, or 0.001 cubic meters.
HistoryThe liter became widely used with metric measurement because it is convenient for liquid and container volumes.
Current useLiters are used for beverages, fuel, tanks, laboratory liquids, cooking, and product packaging.
| gallon (US) [gal US] | liter [L] |
|---|---|
| 1 | 3.785412 |
| 2 | 7.570824 |
| 5 | 18.927059 |
| 10 | 37.854118 |
| 20 | 75.708236 |
| 25 | 94.635295 |
| 50 | 189.270589 |
| 100 | 378.541178 |
| 1000 | 3785.411784 |
Use this formula: 1 gallon (US) [gal US] = 3.785412 liter [L] Enter your value in the calculator and the result updates instantly.
1 gallon (US) [gal US] equals 3.785412 liter [L].
Yes. Use the swap button in the calculator or open the related reverse conversion link when it is listed on this page.