Gallons → Liters
Convert US gallons to liters or liters to gallons.
Convert US gallons to liters or liters to gallons.
Gallons and liters both measure liquid volume. The US gallon, used for fuel, milk, paint and water in the United States, is defined as 231 cubic inches, which equals exactly 3.785411784 liters. A liter is the metric unit used on most products sold internationally and on many beverage and chemical containers. Converting gallons to liters is a single multiplication, but it matters which gallon you start with: the imperial gallon used in the United Kingdom is larger, at 4.54609 liters.
Common reasons to convert include mixing fertilizers, pesticides, pool chemicals, concrete admixtures or two-stroke fuel when the label gives rates per liter; sizing tanks, sprayers, aquariums and water heaters; comparing fuel economy or fuel prices abroad; and following recipes or product instructions written in metric. Small rounding differences add up at larger volumes. Using 3.8 instead of 3.785 liters per gallon adds about 1.5 liters on a 100-gallon tank, which can throw off a chemical mix ratio.
To use this converter, enter a number of US gallons in the US Gallons box and the equivalent in liters appears instantly. You can also type into the Liters box to see how many US gallons that is. Decimals are accepted, so half-gallon and quart-sized amounts such as 0.5 or 0.25 gallons work fine. The tool uses 1 US gallon = 3.78541 liters and rounds results to two decimal places. It converts US gallons only; for imperial gallons, multiply by 4.54609 instead. The reference chart below covers common container and tank sizes, from a quart up to a 100-gallon tank.
Multiply US gallons by 3.78541 to get liters. Formula: liters = gallons × 3.78541. Example: 5 gallons × 3.78541 = 18.93 liters.
To convert liters to US gallons, divide by 3.78541 (or multiply by about 0.264172). Example: 20 liters ÷ 3.78541 = 5.28 gallons.
US gallons to liters conversion chart
| US gallons | Liters |
|---|---|
| 0.25 | 0.95 |
| 0.5 | 1.89 |
| 1 | 3.79 |
| 2 | 7.57 |
| 3 | 11.36 |
| 5 | 18.93 |
| 10 | 37.85 |
| 15 | 56.78 |
| 20 | 75.71 |
| 50 | 189.27 |
| 55 | 208.2 |
| 100 | 378.54 |
1 US gallon = 3.78541 liters
1 US gallon = 3.785 liters.
US gallon (3.785 L). Imperial is 4.546 L.
5 US gallons is 18.93 liters, the size of a standard water jug or bucket.
One liter is about 0.2642 US gallons, so roughly 3.8 liters make a gallon.
A US gallon of paint is 3.79 liters. A quart, one quarter of a gallon, is about 0.95 liters.
A 55-gallon drum holds about 208.2 liters, often labeled as 208 liters.
20 liters equals about 5.28 US gallons.
Divide 235.21 by the liters per 100 km figure to get US miles per gallon. For example, 8 L/100 km is about 29.4 mpg.