Volume Converter

Free volume converter: convert between liters, milliliters, gallons, quarts, pints, cups, fluid ounces, tablespoons, teaspoons, cubic meters, and cubic centimeters.

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Enter a value to convert.

How volume converter works

This converter handles both metric and imperial volume units. It works by first converting the input to liters (the base unit), then dividing by the target unit factor. For example, 1 US gallon equals 3.78541 liters, and 1 cup equals 0.236588 liters.

The metric units (liter, milliliter, cubic meter, cubic centimeter) are related by powers of 1000 or 1000000. The imperial units (gallon, quart, pint, cup, fluid ounce, tablespoon, teaspoon) use exact US customary conversion factors.

This is especially useful for cooking and baking, where recipes use different measurement systems. Results are rounded to six decimal places, with very large or small values in scientific notation.

Frequently asked questions

How many milliliters are in a cup?
One US customary cup equals 236.588 milliliters. This converter uses that exact factor. Note that metric cups (used in some countries) are 250 ml, which is slightly different.
How many cups are in a gallon?
One US gallon equals 16 cups. The converter shows all units simultaneously when you select gallons as the source.
How many teaspoons are in a tablespoon?
One US tablespoon equals 3 teaspoons. The converter uses the exact US customary factors: 1 tbsp = 14.7868 ml and 1 tsp = 4.92892 ml.
What is the difference between US and imperial gallons?
A US gallon is 3.78541 liters, while an imperial (UK) gallon is 4.54609 liters. This converter uses US customary units, which are standard in American recipes.