The converter uses litres as the base unit. Metric conversions are exact, US liquid units use the defined US gallon of 231 cubic inches, and imperial units use the defined imperial gallon of 4.54609 litres. That matters because a US gallon is 3.785411784 L, while an imperial gallon is 4.54609 L.
Volume Converter
Runs entirely in your browser - no upload, no sign-up.
Volume converter
ResultEnter a volume to convert
How do you convert between volume units?
Choose the volume unit you have, enter a value, and choose the unit you need. This volume converter updates instantly between metric units, US liquid and kitchen units, imperial units, cubic inches and cubic feet, with a reference table showing every unit at once.
How to use
- 1Enter a volume. Type a number in the value field. Decimals are fine, and you can use either a dot or a comma as the decimal mark.
- 2Choose the units. Pick the unit you are converting from beside the number, then choose the target unit in the To dropdown.
- 3Read every unit. The main result shows your chosen target. The reference grid below shows the same volume in metric, US, imperial and cubic units.
- 4Copy or swap. Use Copy result to grab the conversion, or Swap units to reverse the direction without retyping the value.
Who it's for
- Recipes and cooking converting cups, tablespoons, teaspoons and milliliters without mixing up US and imperial measurements.
- Travel and shopping reading fuel, drink or container volumes listed in liters, gallons, pints or fluid ounces.
- Shipping and storage comparing cubic feet, cubic inches, liters and cubic meters for boxes, tanks and bins.
- Lab and workshop notes turning small metric volumes into mL, L, teaspoons or fluid ounces for quick checks.
- DIY and aquariums estimating bucket, tank or pond capacity across gallons, liters and cubic feet.
FAQ
Is this volume converter free?
Yes. The volume converter is free to use with no sign-up, no download and no usage limit. The calculation runs in your browser, so the value you type is not uploaded.
Which volume units does it convert?
It converts milliliters, liters, cubic meters, US teaspoons, US tablespoons, US fluid ounces, US cups, US pints, US quarts, US gallons, imperial fluid ounces, imperial pints, imperial gallons, cubic inches and cubic feet.
How many liters are in a US gallon?
One US gallon is exactly 3.785411784 liters because it is defined as 231 cubic inches. Enter a gallon value and choose liters to get the precise conversion.
How many milliliters are in a cup?
This tool uses the US legal cup, so 1 US cup is 236.5882365 mL. Some recipes use metric cups of 250 mL, so check the recipe source when exact baking ratios matter.
Are US and imperial gallons different?
Yes. A US gallon is 3.785411784 L, while an imperial gallon is exactly 4.54609 L. The tool labels them separately so you do not accidentally use the wrong system.
Can I convert cubic feet to gallons?
Yes. Select ft^3 as the source unit and US gal or imp gal as the target. One cubic foot is 28.316846592 L, which is about 7.48 US gallons or 6.23 imperial gallons.
Does it accept decimals and commas?
Yes. You can type a dot or a comma as the decimal mark, so 2.5 and 2,5 are read as the same volume. Negative values are rejected because volume cannot be less than zero.