Quick example
Convert 1 liter to US gallons
Divide 1 liter by the exact size of a US liquid gallon, 3.785411784 liters. The result is approximately 0.264172 US gallon, or about 4.22675 US cups.
Quick reference
Common volume conversions
| Starting volume | Equivalent |
|---|---|
| 1 liter | 1,000 milliliters |
| 1 cubic meter | 1,000 liters |
| 1 cubic foot | 28.316846592 liters |
| 1 US fluid ounce | 29.5735295625 milliliters |
| 1 US cup | 236.5882365 milliliters |
| 1 US liquid gallon | 3.785411784 liters |
| 1 imperial fluid ounce | 28.4130625 milliliters |
| 1 imperial gallon | 4.54609 liters |
Measurement systems
Metric, cubic, US liquid, and imperial units
Metric volume
One liter equals 1,000 milliliters or 1,000 cubic centimeters. One cubic meter contains 1,000 liters.
Cubic units
Cubic inches, feet, and yards describe the space inside a three-dimensional shape. One cubic foot contains 1,728 cubic inches.
US liquid units
A US liquid gallon contains 4 quarts, 8 pints, 16 cups, or 128 US fluid ounces.
Imperial units
An imperial gallon contains 4 imperial quarts, 8 imperial pints, or 160 imperial fluid ounces and is larger than a US gallon.
Recipes and labels
Check which cup or fluid ounce is intended
Cup, tablespoon, teaspoon, pint, quart, gallon, and fluid ounce can vary by country or context. This converter labels US customary and imperial definitions explicitly. Some recipes use rounded metric cups or spoons, so follow the measurement standard named by the recipe or measuring equipment. Displayed results use up to 12 significant digits.
Common questions
Volume conversion FAQ
How many liters are in a US gallon?
One US liquid gallon equals exactly 3.785411784 liters.
Are US and imperial gallons the same?
No. A US liquid gallon is 3.785411784 liters; an imperial gallon is 4.54609 liters.
How many US cups are in a liter?
One liter equals approximately 4.22675 US customary cups.
Are US and imperial fluid ounces the same?
No. A US fluid ounce is 29.5735295625 milliliters; an imperial fluid ounce is 28.4130625 milliliters.
How many liters are in a cubic foot?
One cubic foot equals exactly 28.316846592 liters.