Convert Gallons to Liters
1 Gallon (gal) = 3.785 Liters (L). Use the free converter below to instantly convert any gallon value to liters, or view the full conversion table and formula.
1 gal = 3.785 L
Gallon to Liter Conversion Table
How to Convert Gallons to Liters
To convert US gallons to liters, multiply the volume in gallons by 3.78541. For example, 5 gallons = 5 × 3.78541 = 18.927 liters. Note: this uses the US liquid gallon, not the imperial gallon (4.546 liters).
Gallon to Liter Examples
1 gal is equal to 3.785 L. Using the formula gallons × 3.78541, 1 gal converts to 3.785 L.
2 gal is equal to 7.571 L. Using the formula gallons × 3.78541, 2 gal converts to 7.571 L.
3 gal is equal to 11.356 L. Using the formula gallons × 3.78541, 3 gal converts to 11.356 L.
4 gal is equal to 15.142 L. Using the formula gallons × 3.78541, 4 gal converts to 15.142 L.
5 gal is equal to 18.927 L. Using the formula gallons × 3.78541, 5 gal converts to 18.927 L.
Gallons to Liters FAQ
How many liters is 1 gallon?
1 US gallon equals approximately 3.785 liters.
How many gallons in a liter?
1 liter equals approximately 0.264 US gallons.
What's the difference between US and imperial gallons?
A US gallon is 3.785 liters while an imperial (UK) gallon is 4.546 liters. The US gallon is about 17% smaller.