Volume Converter
Convert liters to US gallons, cups, fluid ounces, and cubic units.
Convert volume
Converted value
1 L equals 0.264172052358 US gal.
Your entries and results stay in this browser. This tool does not send, save, or add them to the page address.
Convert liquid and cubic volume
Choose from metric volume, US customary liquid measures, and common cubic units. Each value is converted through liters as the shared base unit.
For recipe work, the Cooking Measurement Converter covers the same US volume units and adds guidance on metric and legal cup standards.
US labels are explicit because US gallons, quarts, pints, cups, and fluid ounces differ from similarly named imperial measures.
Volume is not weight
This calculator does not convert liquid volume into mass. A fluid ounce is not an ounce by weight, and the mass of a cup depends on the substance’s density.
Container capacity, usable fill level, displacement, wall thickness, and measurement error are outside this unit conversion.
Frequently asked questions
How many liters are in one US gallon?
One US liquid gallon equals exactly 3.785411784 liters under the defined international relationship used by this converter.
Are US and imperial gallons the same?
No. This calculator currently includes US liquid gallons only. An imperial gallon is larger, so confirm the standard before converting.
Is a fluid ounce the same as an ounce by weight?
No. A US fluid ounce measures volume, while an ounce by weight measures mass. Converting between them requires the material's density.
Is one milliliter equal to one cubic centimeter?
Yes. One milliliter and one cubic centimeter represent the same volume, so their conversion ratio is exactly one to one.