1 gal = 3.785412 L
| Gallon (US) (gal) | Liter (L) |
|---|---|
| 0.25 | 0.9464 |
| 0.5 | 1.8927 |
| 1 | 3.7854 |
| 2 | 7.5708 |
| 3 | 11.3562 |
| 4 | 15.1416 |
| 5 | 18.927 |
| 6 | 22.7125 |
| 8 | 30.2833 |
| 10 | 37.8541 |
| 12 | 45.4249 |
| 15 | 56.7812 |
| 20 | 75.7082 |
| 25 | 94.6353 |
| 30 | 113.562 |
| 40 | 151.416 |
| 50 | 189.271 |
| 75 | 283.906 |
| 100 | 378.541 |
| 500 | 1892.71 |
To convert US gallons to liters, multiply the number of gallons by 3.78541.
1 gal = 3.785412 L
Convert 15 gallons (a gas tank) to liters: 15 × 3.78541 = 56.78 liters
Convert 5 gallons (a water jug) to liters: 5 × 3.78541 = 18.93 liters
To convert liters to US gallons, divide the liters by 3.78541.
\u2022 1 gallon (3.785 L) is the size of a standard milk jug.
\u2022 5 gallons (18.9 L) is a large water cooler jug or a bucket.
\u2022 15 gallons (56.8 L) is a typical car fuel tank capacity.
\u2022 300 gallons (1,136 L) is a small residential hot tub.
Converting gallons to liters is essential when working with fuel, water systems, aquariums, and recipes that span the US and metric systems. The US gallon (3.785 liters) is the standard for liquid measurement in America, while liters are used virtually everywhere else.
Aquariums in the US are sold by gallon capacity: 10-gallon, 20-gallon, 55-gallon, etc. But water treatment products, international equipment, and scientific guides often reference liters. A 55-gallon aquarium is about 208 liters. A popular 20-gallon tank is about 75.7 liters.
Understanding water consumption in both units helps compare usage data internationally. A 10-minute shower uses about 20 gallons (75.7 liters). A standard washing machine uses 15-30 gallons (57-114 liters) per cycle. Water bills may be in gallons (US) or cubic meters (1,000 liters).
Homebrewing recipes from American sources use gallons, while international recipes use liters. A standard homebrew batch is 5 gallons (18.9 liters). Wine kits often come in 6-gallon (22.7-liter) batches. Fermenter capacities and ingredient ratios need accurate conversion.
One US gallon equals approximately 3.78541 liters.
One liter equals approximately 0.2642 US gallons.
A US gallon is 3.785 liters, while a UK (imperial) gallon is 4.546 liters. UK gallons are about 20% larger.
5 US gallons equals approximately 18.93 liters.