Volume is measured in units such as ml, l, fl oz, cup, qt, gal. Pick a source and target unit above, enter a value, and the result appears instantly — free and entirely in your browser. Below you'll find the most common individual conversions as dedicated pages.
Which volume units are there?
- Milliliter (ml) — The millilitre (ml) is one thousandth of a litre, the everyday metric unit for medicine doses, recipes and small drinks.
- Liter (l) — The litre (L) is the metric unit of volume, equal to one cubic decimetre. It is used for drinks, fuel and liquids worldwide.
- Fluid ounce (US) (fl oz) — The US fluid ounce (fl oz) is about 29.57 ml. It is used for drinks and cooking in the US. (The UK fluid ounce is slightly smaller, about 28.41 ml.)
- Cup (US) (cup) — The US cup equals about 237 ml. It is the standard volume measure in American recipes.
- Quart (US) (qt) — The US quart (qt) equals a quarter gallon or about 0.946 litres. It is used for milk and other liquids in the US.
- Gallon (US) (gal) — The US gallon (gal) equals about 3.785 litres. It is the imperial unit for fuel and large liquid quantities in the US. (The UK gallon is larger, about 4.546 L.)
Key facts about volume
Metric countries measure liquids in litres and millilitres; the US uses gallons, quarts, cups and fluid ounces — and US and UK units differ. Recipes and fuel figures often need converting.
A US gallon is exactly 3.785411784 litres, while a UK (imperial) gallon is 4.54609 L — about 20% larger. One US fluid ounce is about 29.57 ml.
How to use the volume converter
- Pick the source unit and enter the volume value.
- Pick the target unit — the result appears instantly.
- Use the swap button to reverse the direction.
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