Gallons to L
One gal equals 3.785411784 L. Type any number and the answer appears as you type — the maths happens in your browser.
Result
The same value in every unit
| Unit | Value |
|---|
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Common values
| gallons | L |
|---|---|
| 1 gal | 3.7854118 L |
| 2 gal | 7.5708236 L |
| 3 gal | 11.356235 L |
| 5 gal | 18.927059 L |
| 10 gal | 37.854118 L |
| 15 gal | 56.781177 L |
| 20 gal | 75.708236 L |
| 25 gal | 94.635295 L |
| 50 gal | 189.27059 L |
| 100 gal | 378.54118 L |
| 500 gal | 1892.7059 L |
| 1000 gal | 3785.4118 L |
How to use
- Enter the number of gallons in the field.
- The result in L updates on every keystroke.
- Use the table below for the values people look up most often.
Formula and reverse conversion
The formula
To convert by hand: L = gal × 3.785411784. Going back the other way, one L is 0.2641720524 gal.
Where the odd number comes from
The factor is not a round number because the imperial units are defined through the metric ones by international agreement: an inch is exactly 25.4 mm and a pound is exactly 0.45359237 kg. Everything else follows from those definitions.
L = gal × 3.785411784
Frequently asked questions
How many L are in one gallons?
One gal is 3.785411784 L.
How do I convert gallons to L?
Multiply by the factor: L = gal × 3.785411784.
Is the result exact?
The factors are the exact legal definitions, and up to ten significant digits are kept in the answer. Rounding happens only in the display.
How do I convert L back to gallons?
One L is 0.2641720524 gal — or open the reverse page linked below.