Volume Converter
Convert litres, millilitres, gallons, cups, pints and more between metric, US and UK units.
Convert volume and capacity units
This volume converter handles metric units (millilitres, litres, cubic metres) and both US and UK liquid measures (fluid ounces, cups, pints, quarts, gallons). Because US and UK gallons and pints are different sizes, the converter keeps them separate so your results are always accurate — especially useful for following recipes from another country.
US vs UK measures
A US gallon is about 3.785 litres, while a UK (imperial) gallon is larger at about 4.546 litres. Pints differ too: a US pint is 473 ml and a UK pint is 568 ml. This is why a recipe’s “pint of milk” can mean different amounts depending on where it was written. Always check which system a recipe uses.
Common volume conversions
| From | To | Result |
|---|---|---|
| 1 litre | US gallons | 0.264 gal |
| 1 US gallon | litres | 3.785 l |
| 1 UK gallon | litres | 4.546 l |
| 1 US cup | millilitres | 236.6 ml |
Frequently asked questions
How many millilitres in a litre?
There are 1,000 millilitres in one litre.
Is a US cup the same as a UK cup?
Not quite. A US cup is about 237 ml, while a metric cup (used in the UK and Australia) is 250 ml. For precise baking, use the right measure for your recipe.