Volume conversion
1 gal to L
3.785 L
1 US gallons = 3.785 litres. Exact factor: L = gal × 3.785411784.
Live converter
Edit either field — the other updates instantly. Type decimal values like 38.4.
The formula
L = gal × 3.785411784
Worked example: 1 × 3.785411784 = 3.785 L.
Values near 1 gal
| gal | L |
|---|---|
| 0.25 | 0.946 |
| 0.5 | 1.893 |
| 0.75 | 2.839 |
| 1this page | 3.785 |
| 1.25 | 4.732 |
| 1.5 | 5.678 |
| 1.75 | 6.624 |
Frequently asked
How do you convert US gallons to litres?
Apply the formula L = gal × 3.785411784. Enter any value in the live converter above and the result updates as you type.
What is 1 gal in L?
1 gal equals 3.785 L. The reference table below shows the values immediately around 1 gal.
Is this conversion exact?
Yes. The US gallon is defined as exactly 231 cubic inches. The imperial gallon is 4.546 L, so UK fuel economy figures are not comparable.