Volume Converter

Convert between liters, gallons, cups, fluid ounces, tablespoons, teaspoons, cubic meters, and more.

Thirteen units can be entered and ten come back, all routed through litres. The kitchen measures are the US customary set, which is the detail that trips up transatlantic recipes: the cup is 236.588 mL rather than the 240 mL legal cup printed on nutrition panels or the 250 mL metric cup used in Australia, the tablespoon is 14.7868 mL and the teaspoon 4.92892 mL, so one litre resolves to 202.8842 teaspoons. Fluid ounces follow the US definition of 29.5735 mL; the imperial fluid ounce is a smaller 28.4131 mL and is not offered at all, which puts a British recipe about four percent adrift if you assume they are the same. Both gallons do appear, and the difference is nowhere near subtle — a US gallon is 3.78541 litres against the imperial 4.54609, so a single litre is 0.2642 of the American one and only 0.22 of the British. Quarts, pints and cubic inches are accepted as entry units but print no column, so those results surface as litres and millilitres instead. Beyond that, dry measure is missing entirely: a US dry pint is a different and larger unit than the liquid pint, and only liquid measure is implemented. There is no density anywhere either, so this cannot turn a volume into a weight — a cup of flour and a cup of water occupy the same space and nothing more.