US Gallons to Liters (gal to l)
1 US gallon = 3.78541178 liters
How to convert US gallons to liters
l = gal × 3.78541178
Example: 5 × 3.78541178 = 18.9271, so 5 US gallons = 18.9271 liters.
US gallons to liters is needed for American fuel and paint quantities, milk jugs and water heater capacities.
A standard oil drum is 55 US gallons, about 208 liters. Multiply gallons by 3.785 for an accurate result, or by 4 and subtract 5% for a quick estimate.
US Gallons to Liters conversion table
| US Gallons (gal) | Liters (l) |
|---|---|
| 0.5 gal | 1.8927 l |
| 1 gal | 3.7854 l |
| 2 gal | 7.5708 l |
| 3 gal | 11.3562 l |
| 4 gal | 15.1416 l |
| 5 gal | 18.9271 l |
| 10 gal | 37.8541 l |
| 12 gal | 45.4249 l |
| 15 gal | 56.7812 l |
| 20 gal | 75.7082 l |
| 25 gal | 94.6353 l |
| 30 gal | 113.5624 l |
| 40 gal | 151.4165 l |
| 50 gal | 189.2706 l |
| 55 gal | 208.1976 l |
| 100 gal | 378.5412 l |
What is a US gallon?
The US gallon is 231 cubic inches, exactly 3.785411784 liters. Fuel prices and fuel economy (miles per gallon) in the US are based on it. The imperial gallon used in the UK is larger, about 4.546 liters.
What is a liter?
A liter is the volume of a cube 10 cm on each side (one cubic decimeter). Fuel, drinks and engine sizes are measured in liters outside the US.
Frequently asked questions
How many liters are in one US gallon?
One US gallon equals 3.78541178 liters.
How do I convert US gallons to liters?
Use the formula l = gal × 3.78541178. 5 × 3.78541178 = 18.9271, so 5 US gallons = 18.9271 liters.
What is 100 gal in l?
100 gal = 378.5412 l.
How do I convert liters back to US gallons?
Use the inverse formula gal = l ÷ 3.78541178, or open the Liters to US Gallons converter.
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