Tool
Volume Converter
Convert between mL, L, m³, tsp, tbsp, fl oz, cups, pints, quarts and gallons. Live reference table.
Convert volumes in three steps
Works in any browser, on any device. No install required.
Enter a volume value
Type any number into the input field.
Select the unit
Choose the source unit — mL, L, cups, gallons, fl oz, and more.
See all volume units at once
Every volume unit updates simultaneously as you type.
Volume units
Cooking and science
Cups, tbsp, tsp, fl oz, liters, mL — all the units you use.
US and UK gallons
Separate conversions since US and UK gallons are different sizes.
Live conversion
Type a value and all units refresh instantly. No button to click.
About the Volume Converter
Volume conversions are essential in cooking, science and engineering. The metric system uses millilitres and litres while US recipes use cups, tablespoons and teaspoons. UK and US gallons are different sizes which adds further complexity. This converter handles all common volume units.
Common uses: adapting recipes between metric and US measurements, converting fuel consumption, understanding drink serving sizes across countries, and laboratory volume measurements.
Key relationships to know: 1 litre = 1000 millilitres, 1 US gallon = 3.785 litres, 1 UK gallon = 4.546 litres. In cooking, 1 US cup = 236.6 ml, 1 tablespoon = 14.8 ml, 1 teaspoon = 4.9 ml. The US and UK cup are slightly different sizes — something that catches people out when adapting American recipes. A US pint is 473 ml while a UK pint is 568 ml.
Fuel economy comparisons also need volume conversion: miles per gallon (mpg) in the US and UK use different gallon sizes, which is why the same car can show a higher mpg figure in the UK. The reference table shows all conversions simultaneously for the value you enter.
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Frequently Asked Questions
How many cups are in a liter?
1 liter = 4.227 US cups. For cooking: 1 liter ≈ 4 cups.
What is the difference between a US gallon and a UK gallon?
US gallon = 3.785 L. UK imperial gallon = 4.546 L — about 20% larger.
How many mL are in a teaspoon?
1 US tsp = 4.93 mL. Standard cooking tsp is 5 mL.
How many fl oz are in a cup?
1 US cup = 8 US fl oz. 1 UK cup = 10 imperial fl oz.