litres to US gallons converter
1 L = 0.2641720524 gal. Type a value in either box — the other side updates instantly, using the exact definition factor, not a rounded shortcut. Fuel tanks and aquarium sizes: litres in most of the world, US gallons in the States. This is the US gallon, not the larger imperial gallon.
Rate: 1 L = 0.2641720524 gal · 1 gal = 3.785411784 L
Formula and a worked example
US gallons = litres × 0.2641720524. Worked example: 50 L × 0.2641720524 = 13.208603 gal. To go back, divide by the same factor (or multiply by 3.785411784).
Where the factor comes from: The US gallon is defined as exactly 231 cubic inches, which works out to 3.785411784 litres. Factors on UnitPairs follow the NIST definitions, so results agree between pages to the last digit shown.
litres to US gallons chart
| litres (L) | US gallons (gal) |
|---|---|
| 1 | 0.264172 |
| 2 | 0.528344 |
| 5 | 1.32086 |
| 10 | 2.641721 |
| 20 | 5.283441 |
| 50 | 13.208603 |
| 100 | 26.417205 |
Questions
How many US gallons are in one litre?
Exactly 0.2641720524 gal — that is the rate this converter applies in both directions.
How do I convert L to gal by hand?
Multiply the litres value by 0.2641720524. For a rough mental estimate, 0.264 is usually close enough — but use the full factor for anything you plan to build, buy or dose.
How accurate is this converter?
The factors are the exact international definitions, so the only rounding is in the display — results are shown to six decimal places, and the underlying value is never pre-rounded.
Related conversions
- US gallons to litres — the reverse of this page
- US gallons to litres
- millilitres to US fluid ounces
- Height converter — centimetres to feet and inches
- Full conversion chart — every pair on one page