Volume Converter
A recipe in cups, fuel in gallons, a bottle in milliliters — choose the unit you've got and read all the others straight off the grid.
How it works
The liter is the base here. Your value converts to liters first, then out to milliliters, gallons, cups, pints, quarts, and fluid ounces. One entry drives every row, updating as you type.
These are US liquid units, which matters more than people expect. A US gallon is 3.78541 liters, while the imperial gallon used in the UK is 4.546 liters — mixing the two throws off fuel and recipe math badly.
Cooking is where the small units come alive. A US cup is 236.6 mL, a pint is two cups, and a quart is two pints. Scaling a recipe up or down is just a matter of reading the right row.
Frequently asked questions
How many milliliters are in a cup?
A US cup is 236.588 mL, usually rounded to 237 mL in the kitchen. Metric recipes often use a 250 mL cup instead, so check which standard a recipe assumes before you scale it.
How many liters in a US gallon?
A US gallon is 3.78541 liters. The UK imperial gallon is larger at 4.546 liters, which is why fuel-economy figures don't line up cleanly between the two countries.
What's the difference between fluid ounces and ounces?
A fluid ounce measures volume, an ounce measures weight. A US fluid ounce is 29.57 mL. They only coincide for water by a rough coincidence, so don't swap them for other liquids.