Volume Converter

Convert liters, milliliters, cubic meters, US and UK gallons, quarts, pints, cups, fluid ounces, tablespoons and teaspoons. Pick a pair below or use the quick converter.

Volume Conversion Pages

One Name, Several Sizes

Volume is the category where the same word means different amounts depending on where a recipe, label or manual came from. The metric units are the same everywhere; the customary ones are not.

UnitUSUK (imperial)Metric / other
Gallon3.785 L4.546 L—
Pint473 ml568 ml—
Fluid ounce29.57 ml28.41 ml—
Cup236.6 ml—250 ml (AU, NZ, CA), 200 ml (Japan)
Tablespoon14.79 ml15 ml15 ml; 20 ml in Australia
Teaspoon4.93 ml5 ml5 ml

Volume From Dimensions

One liter is the volume of a 10 cm cube, so 1 ml is exactly 1 cm³ and 1,000 liters is 1 m³. To get the volume of a box in liters, multiply its length, width and height in centimeters and divide by 1,000.

In US units, one gallon is defined as exactly 231 cubic inches, and one cubic foot holds about 7.48 US gallons.

Volume Questions

Does "gallon" mean the US or UK gallon here?
Gallon, pint, quart, cup and fluid ounce on their own mean the US units. The UK gallon, UK pint and UK fluid ounce are listed separately in the converter.
Are these conversions exact?
Yes. The US gallon is exactly 3.785411784 L and the UK gallon exactly 4.54609 L, and every other US and UK unit is an exact fraction of those. Results are only rounded for display.
Can I convert cups of flour to grams here?
No. Cups measure volume and grams measure weight, so the answer depends on the ingredient. A cup of flour weighs about 120–150 g; a cup of sugar about 200 g.
Which cup should I use for a recipe?
Use the cup the recipe was written for: 236.6 ml for US recipes, 250 ml for Australian, New Zealand and Canadian recipes.