Volume Converter — All Units
How to use this volume converter
Enter your amount, choose the unit you have, and choose the unit you need. The result updates instantly, with a reference table showing your amount across the most common units. The ⇄ button swaps direction.
Understanding the volume units
Metric units (millilitre, litre, cubic metre) are the global standard. One litre is exactly 1,000 millilitres or 1,000 cubic centimetres, and one cubic metre is 1,000 litres.
US customary units (teaspoon, tablespoon, fluid ounce, cup, pint, quart, gallon) are used in American recipes and product labels. One US gallon is 3.78541 litres.
UK imperial units look similar but are larger — and this is the most common volume mistake people make. A UK pint is 568 ml while a US pint is only 473 ml, and a UK gallon (4.54609 L) is about 20% bigger than a US gallon. If you're following an American recipe in the UK or comparing fuel economy figures, the difference matters. Our converter lists US and UK units separately so you always get the right answer.
Cubic measurements (cubic inch, cubic foot, cubic yard, cubic metre) are used for freight, room volumes, aggregates, and excavation. One cubic foot holds about 28.3 litres, and one cubic metre about 35.3 cubic feet.
Frequently asked questions
How many litres are in a gallon?
It depends which gallon: a US gallon is 3.78541 litres, while a UK (imperial) gallon is 4.54609 litres. Always check which one your source means.
How many millilitres in a cup?
A US cup is 236.588 ml. Note that recipe "cups" vary by country — an Australian cup is 250 ml — so for baking precision, weighing ingredients in grams is more reliable.
Why are US and UK fluid ounces different?
They evolved from different historical standards: the US fluid ounce is 29.5735 ml, the UK fluid ounce 28.4131 ml. The gap is small per ounce but grows over larger amounts.
How do I convert cubic feet to litres?
Multiply by 28.3168. So a 5 ft³ fridge compartment is about 141.6 litres.
Is 1 ml the same as 1 cm³?
Yes, exactly. Millilitres and cubic centimetres (cc) are two names for the same volume, which is why medicine doses use them interchangeably.
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