Gallons to Liters Converter
Handy for US fuel volumes, paint, milk jugs and water heaters. This page uses the US gallon.
1 US gal = 3.7854 L
liters
1 US gal = 3.7854 L
How to convert US gallons to liters
Multiply the number of US gallons by 3.785411784.
Formula
L = US gal × 3.785411784
Examples
- 1 US gal × 3.785411784 = 3.7854 L
- 15 US gal × 3.785411784 = 56.7812 L
- 55 US gal × 3.785411784 = 208.1976 L
US gallons to liters conversion table
| US gallons (US gal) | Liters (L) |
|---|---|
| 0.25 | 0.9464 |
| 0.5 | 1.8927 |
| 1 | 3.7854 |
| 2 | 7.5708 |
| 3 | 11.3562 |
| 5 | 18.9271 |
| 10 | 37.8541 |
| 12 | 45.4249 |
| 15 | 56.7812 |
| 20 | 75.7082 |
| 25 | 94.6353 |
| 40 | 151.4165 |
| 50 | 189.2706 |
| 55 | 208.1976 |
| 100 | 378.5412 |
| 500 | 1,892.7059 |
Values rounded to 4 decimal places or 4 significant digits.
About US gallons
The US gallon is defined as exactly 231 cubic inches, which is 3.785411784 liters. It is the unit for fuel prices and fuel economy (miles per gallon) in the United States.
About liters
A liter is the volume of a cube 10 cm on each side (one cubic decimeter). It is not an SI unit, but it is accepted for use with SI and is the everyday unit for drinks and fuel almost everywhere.
Frequently asked questions
How many liters are in one US gallon?
One US gallon equals 3.7854 liters (rounded).
How do I convert US gallons to liters?
Multiply the number of US gallons by 3.785411784. For example: 15 US gal × 3.785411784 = 56.7812 L.
How many US gallons are in one liter?
One liter equals 0.2642 US gallons.
Is the US gal to L conversion exact?
Yes. The factor follows directly from the official definitions of both units, so the only rounding is in how many decimals are displayed.
Does this page use US or UK gallons?
US gallons. One US gallon is exactly 3.785411784 liters. For UK gallons, use the UK gallons to liters page.