Volume Converter
Choose the two units and type a value to convert Volume in either direction. The table shows common values at a glance.
Be the first to rate this tool
The formula
Result = value x (size of the "from" unit / size of the "to" unit).
How to use the converter
Type a value, choose the unit you are converting from and the one you want, and the answer appears straight away. The table below the result lists common values, and you can swap the units to convert the other way.
Common conversions
The table updates for the units you choose. It is a quick way to check an answer, and to spot the pattern if you convert the same quantities often.
The most-used volume conversions
| From | To |
|---|---|
| 1 L | 0.26417 gal |
| 1 gal | 3.7854 L |
Use these as a sanity check. If your answer is far from the table, the units are probably the wrong way round.
Why the answers are exact
Conversions use the internationally agreed definitions, for example 1 inch = 25.4 mm exactly and 1 pound = 0.45359237 kg exactly. We keep full precision internally and only round the number you see.
Volume Converter: frequently asked questions
Can I convert in both directions?
Yes. Swap the From and To units and the answer follows.
How many decimal places are shown?
Up to 10 significant decimals for the main result, with common-value tables rounded to about 8.
Does the converter need an internet connection?
Not once the page has loaded. The calculation happens in your browser.
How exact is the conversion?
It uses the internationally agreed definitions, and rounds only the number you see.
Is what I enter in this converter saved or sent anywhere?
No. The calculation runs in your browser, so what you enter is not sent to our servers. We only count, anonymously, whether a tool ran successfully.
Is this converter free to use?
Yes. It is free, needs no sign-up and has no usage limit.
Last reviewed: October 3, 2026