Volume Converter
Enter a volume in any unit to see metric, US and imperial equivalents at once.
How to use it
- Enter an amount Type the volume you want to convert.
- Choose the starting unit Select it in the "From" menu.
- Read the conversions All other units update instantly.
Examples
| 1 US gallon | 3.785 L |
|---|---|
| 1 litre | 33.81 US fl oz |
| 1 US cup | 236.6 mL |
About this tool
Volume conversions trip people up because “gallon”, “pint” and “fluid ounce” mean different amounts in the US and the UK. This converter keeps them separate and labels each clearly, so you always know whether you are working in US or imperial measures.
The factors are exact, derived from the US gallon (3.785411784 L) and the imperial gallon (4.54609 L). It is handy for cooking with recipes from other countries, and it runs entirely in your browser.
Frequently asked questions
Is a US gallon the same as an imperial gallon?
No. A US gallon is 3.785 litres; an imperial (UK) gallon is larger, at 4.546 litres.
How many millilitres are in a US cup?
About 236.6 mL. A US cup is 8 US fluid ounces.
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Updated June 12, 2026