Us Gallons to Liters Converter
Convert US gallons to liters instantly. Enter any value and get the result. Includes a conversion table and the exact formula.
| Us Gallons | Liters |
|---|
How to convert US gallons to liters
Enter your value
Type the number of us gallons you want to convert into the left box. The result in liters appears instantly in the right box. You can also type into the right box to convert in the other direction.
Use the swap button
Click the ⇄ Swap button to reverse the conversion — Liters to Us Gallons. Your current value carries across so you don't have to re-enter anything.
About Us Gallons and Liters
The US gallon is 3.785 litres. The UK (imperial) gallon is 4.546 litres. Always clarify which gallon is meant.
Worked examples: Us Gallons to Liters
Multiply the Us Gallons value by 3.78541 to get Liters. A few quick examples:
- 5 Us Gallons × 3.78541 = 18.9271 Liters
- 25 Us Gallons × 3.78541 = 94.6352 Liters
- 250 Us Gallons × 3.78541 = 946.353 Liters
Related conversions
US gallons versus UK (imperial) gallons
A US gallon is 3.78541 litres, while a UK (imperial) gallon is 4.54609 litres, about 20 per cent larger. That difference is why fuel economy in mpg looks better in the UK than in the US for the same car.
| Gallons | US litres | UK litres |
|---|---|---|
| 1 | 3.79 | 4.55 |
| 2 | 7.57 | 9.09 |
| 5 | 18.93 | 22.73 |
| 10 | 37.85 | 45.46 |
| 15 | 56.78 | 68.19 |
| 20 | 75.71 | 90.92 |
1 US gallon = 3.785 L; 1 UK gallon = 4.546 L. Always check whether a 'gallon' means US or UK before converting — a 20% difference is not a rounding error.
| Us Gallons | Liters |
|---|---|
| 0.5 | 1.893 |
| 1 | 3.785 |
| 2 | 7.571 |
| 5 | 18.93 |
| 10 | 37.85 |
| 15 | 56.78 |
Frequently asked questions
How do I convert US gallons to liters?
To convert US gallons to liters, multiply by 3.78541. Or use the calculator above for instant results.
How many liters are in 1 US gallons?
1 US gallons equals 3.78541 liters.
Is the US gallons to liters converter free?
Yes, the US gallons to liters converter is completely free with no sign-up required, no downloads, and it works offline once the page has loaded.