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Conversions

Volume Converter

Convert between millilitres, litres, cubic metres, teaspoons, tablespoons, cups, pints, quarts, gallons, and more.

What is Volume Converter?

A volume converter lets you convert between liquid and capacity units across metric and US customary systems. Volume units are essential in cooking, chemistry, medicine, and fluid engineering. The metric system uses litres and millilitres, while US recipes use cups, fluid ounces, and gallons — conversions between them are required whenever working across regions.

How to use

  1. 1 Enter the volume value you want to convert in the Value field.
  2. 2 Select the source unit from the From dropdown.
  3. 3 Select the target unit from the To dropdown.
  4. 4 The converted result appears instantly along with a full conversion table.
  5. 5 Use the swap button to reverse the conversion direction.

Formula

converted = input_value * (factor_of_from_unit / factor_of_to_unit), where all factors are expressed relative to litres

Example calculation

To convert 2 US cups to millilitres: 2 cups × 236.588 ml/cup = 473.176 ml. To convert that to fluid ounces: 473.176 ml / 29.5735 ml/fl_oz = 16 fl oz.

Frequently asked questions

How many millilitres are in a cup?

One US cup equals 236.588 millilitres. This is the standard used in US recipes and nutrition labelling.

What is the difference between a US gallon and a UK gallon?

A US gallon equals 3.785 litres, while a UK (imperial) gallon equals 4.546 litres. The UK gallon is about 20% larger. This difference matters significantly when comparing fuel prices or volumes across countries.

How many teaspoons are in a tablespoon?

There are exactly 3 teaspoons in 1 tablespoon in both US and metric cooking measurements. One US tablespoon is approximately 14.787 millilitres.

What is a fluid ounce and how does it differ from a weight ounce?

A fluid ounce measures volume (approximately 29.574 ml in the US system), while a weight ounce measures mass (approximately 28.35 g). They are different quantities and should not be confused.

How do I convert litres to cubic metres?

One cubic metre equals exactly 1000 litres. To convert litres to cubic metres, divide by 1000. For example, 250 litres = 0.25 cubic metres.