Gallons to Liters Converter
Convert gallons to liters by first choosing whether the measurement uses US gallons or Imperial gallons. The systems are different: one US gallon equals exactly 3.785411784 liters, while one Imperial gallon equals exactly 4.54609 liters.
Quick conversion table
| US Gallons | Liters |
|---|---|
| 0.5 US gal | 1.8927 L |
| 1 US gal | 3.7854 L |
| 2 US gal | 7.5708 L |
| 5 US gal | 18.9271 L |
| 10 US gal | 37.8541 L |
| 20 US gal | 75.7082 L |
| 50 US gal | 189.2706 L |
How to use the Gallons to Liters Converter
- Choose US gallon or Imperial gallon.
- Enter the number of gallons.
- For US gallons, the converter multiplies by 3.785411784.
- For Imperial gallons, it multiplies by 4.54609.
- Choose the decimal precision needed for the result.
- Use quick values, copy the result or use Swap to convert liters back to the selected gallon system.
Examples
1 US gallon to liters
1 US gallon equals exactly 3.785411784 liters.
1 Imperial gallon to liters
1 Imperial gallon equals exactly 4.54609 liters.
5 US gallons to liters
5 US gallons equals exactly 18.92705892 liters.
10 US gallons to liters
10 US gallons equals exactly 37.85411784 liters.
10 Imperial gallons to liters
10 Imperial gallons equals exactly 45.4609 liters.
Frequently asked questions
How many liters are in one US gallon?
One US gallon equals exactly 3.785411784 liters.
How many liters are in one Imperial gallon?
One Imperial gallon equals exactly 4.54609 liters.
What is the formula for US gallons to liters?
Multiply US gallons by 3.785411784.
What is the formula for Imperial gallons to liters?
Multiply Imperial gallons by 4.54609.
Which gallon should I choose?
Choose US gallon when the source measurement uses the US customary gallon. Choose Imperial gallon when the measurement specifically uses the UK or Imperial gallon.
Is an Imperial gallon larger than a US gallon?
Yes. One Imperial gallon is 4.54609 liters, compared with 3.785411784 liters for one US gallon.
How many liters is 5 gallons?
5 US gallons equals approximately 18.9271 liters. 5 Imperial gallons equals 22.73045 liters.
Can I convert liters back to gallons?
Yes. Use Swap or open the Liters to Gallons Converter and select US or Imperial gallons.
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