Volume Unit Converter

How to use this tool

1. Enter a value. Type the quantity you want to convert in the "From" field.
2. Select units. Choose the source unit and the target unit from the dropdown menus. US and UK units are listed separately.
3. Read the result. The converted value appears instantly in the "To" field, and the panel below lists every supported unit. Use the copy buttons for a result you need to keep.
4. Swap or share. Use Swap to reverse the conversion. Copy the page link after entering a value to share this conversion; the value is stored in the URL fragment and stays out of page requests.

US vs UK volume units

The United States and the United Kingdom both use names like "gallon," "pint," and "fluid ounce," but the underlying volumes differ. A US gallon is 3.785411784 liters, while a UK (Imperial) gallon is 4.54609 liters: about 20% larger. This also means a UK pint (568 mL) is larger than a US pint (473 mL). When following a recipe or ordering fuel, always confirm which system is being used.

The converter also lists metric cooking teaspoons and tablespoons as separate choices. These standardized measures are exactly 5 mL and 15 mL, respectively; a customary teaspoon or tablespoon has a different volume. For a quick comparison, the results panel shows the entered amount in every supported unit at once, while the highlighted row marks the selected target.

Common volume conversions

How volume conversion works

Every conversion uses liters as the intermediate base unit. The input value is first multiplied by its unit's conversion factor to liters, then divided by the target unit's factor. All factors are exact international definitions or NIST-published values.

Cooking volume reference

Dry vs. liquid measure

In the US system, liquid measures and dry measures share the same names but differ in volume. A US dry pint = 551 mL; a US liquid pint = 473 mL. In practice, dry cups and liquid cups are the same volume in US home cooking, but professional baking uses weight (grams) rather than volume for dry ingredients to avoid measurement inconsistency. European recipes almost always specify weight for dry ingredients. This converter covers liquid and general capacity units; it does not include the US dry pint or other dry-volume units, so do not use its liquid pint result as a dry-pint conversion.

Wine and spirits bottle sizes

Medical volume units

In clinical contexts, 1 mL = 1 cc (cubic centimetre) exactly, and these terms are used interchangeably on syringes and IV equipment. A medical teaspoon is defined as exactly 5 mL. Syringe volumes are always stated in mL or cc. Never convert medical dosages using household teaspoons, which are typically 4–6 mL depending on the spoon.