US gallons to litres
One US gallon is 3.785411784 litres.
1 US gallon = 3.785411784 litres · 1 litre = 0.2641720524 US gallons
This factor is exact, not rounded. It comes from the definition of the units rather than from a measurement, so the only limit on precision is how many digits are worth showing.
US gallons to litres table
| US gallons (gal) | Litres (L) |
|---|---|
| 1 | 3.785411784 |
| 2 | 7.570823568 |
| 3 | 11.35623535 |
| 5 | 18.92705892 |
| 10 | 37.85411784 |
| 20 | 75.70823568 |
| 25 | 94.6352946 |
| 50 | 189.2705892 |
| 100 | 378.5411784 |
| 500 | 1,892.705892 |
| 1,000 | 3,785.411784 |
How the conversion works
Multiply by 3.785411784 to go from US gallons to litres, or by 0.2641720524 to go back the other way. Both figures are exact rather than rounded: they follow from the definitions of the units, not from anybody measuring something.