How volume conversion works
Every volume unit has a fixed ratio to the liter. The value is first converted to liters, then into the target unit.
Common values
| Value (gal) | Result |
|---|---|
| 0.1 gal | 0.378541 L |
| 0.25 gal | 0.946353 L |
| 0.5 gal | 1.89271 L |
| 1 gal | 3.78541 L |
| 1.5 gal | 5.67812 L |
| 2 gal | 7.57082 L |
| 3 gal | 11.3562 L |
| 5 gal | 18.9271 L |
| 10 gal | 37.8541 L |
More detail
US liquid measure
The US gallon is defined as exactly 3.785411784 liters. A gallon splits into 4 quarts, 8 pints, or 128 fluid ounces — each a fixed fraction of the gallon, so 1 quart = 0.946353 L and 1 pint = 0.473176 L.
Recipe conversions. 1 US gallon ≈ 3.785 L and 1 cup ≈ 236.6 mL. A 2 L bottle is a little over half a gallon — a handy reference when converting recipes.
Frequently asked questions
Is a US gallon the same as a UK (imperial) gallon?
No. This converter uses the US gallon (3.785411784 L exactly). The UK imperial gallon is 4.54609 L — about 20% larger.
How many mL is 1 quart?
1 US quart = 946.353 mL, exactly one-quarter of a US gallon.
How many liters is 1 cubic meter?
1 m³ = 1,000 L exactly — useful for sizing water tanks or aquariums.
Is a fluid ounce the same as a weight ounce?
No. Fluid ounces (fl oz) measure volume, while ounces (oz) measure mass. 1 US fl oz of water weighs about 29.57 g, but the two units aren't interchangeable for other liquids.