Volume & Capacity Converter
Gallons to Liters Converter (US Liquid)
Convert US gallons (gal) to metric liters (L) for fuel tanks, aquariums, and fluid systems.
Volume & Capacity
(gal (US))
Example: 15 gal (US)
(L)
e.g. 56.7812L
Standard: 1 L = 1,000 mL ≈ 0.26417 gal (US)
Enter any number above to convert US Gallons to Liters. Click (i) for brief unit info.
Converting the other way?
Switch directly to the reverse calculator: Liters to Gallons Converter (US Liquid)
How to Convert US Gallon (Liquid) to Liter
Official Mathematical Formula
liters = US gallons × 3.785411784
Where the input value in gal (US) is transformed using the exact standardized conversion factor to produce the output in L.
Practical Calculation Example
You can verify this calculation directly using our interactive tool above.
Quick Conversion Reference Table (gal (US) → L)
US Gallon (Liquid) (gal (US)) | Liter (L) | Copy |
|---|---|---|
| 1 gal (US) | 3.78541 L | |
| 2 gal (US) | 7.57082 L | |
| 3 gal (US) | 11.3562 L | |
| 5 gal (US) | 18.9271 L | |
| 10 gal (US) | 37.8541 L | |
| 15 gal (US) | 56.7812 L | |
| 20 gal (US) | 75.7082 L | |
| 25 gal (US) | 94.6353 L | |
| 50 gal (US) | 189.2706 L | |
| 75 gal (US) | 283.9059 L | |
| 100 gal (US) | 378.5412 L | |
| 250 gal (US) | 946.3529 L | |
| 500 gal (US) | 1,892.7059 L | |
| 1000 gal (US) | 3,785.4118 L |
US Gallon (Liquid) to Liter FAQs
1 US gallon of gasoline is approximately 3.7854 liters.