Volume Converter
Convert between liters, US gallons, quarts, cups, fluid ounces, and more — updates instantly as you type.
How to use this tool
Enter a value, then choose the "from" and "to" volume units. The converted result updates instantly.
About these conversions
All units convert through liters using exact US customary factors: 1 US gallon = 3.785411784 L, 1 US quart = 0.946352946 L, 1 US cup = 0.2365882365 L, 1 US fluid ounce = 0.0295735295625 L, 1 cubic meter = 1000 L exactly, 1 cubic foot = 28.316846592 L.
Frequently asked questions
Are these US or imperial (UK) units?
US customary units (US gallon = 3.785411784 liters). UK imperial gallons are different and larger (about 4.546 liters) — this tool does not include imperial units.
How many cups are in a gallon?
16 US cups = 1 US gallon (a US cup is 8 fluid ounces, and a gallon is 128 fluid ounces).