Cooking Measurement Converter
Convert cups to milliliters and other US cooking volume measurements.
Convert a cooking volume
Uses US customary volume units and metric milliliters or liters.
Converted amount
1 US cup = 236.58824 milliliters
Volume only. US fluid ounces are not ounces by weight, and ingredient density is not considered.
Your entries and results stay in this browser. This tool does not send, save, or add them to the page address.
Convert recipe volume measurements
Enter an amount, select its current unit, and choose the unit you need. The converter uses fixed US customary volume definitions and exact metric relationships.
This is a volume converter. It does not treat fluid ounces as ounces by weight and does not estimate ingredient density.
Measurement standards
The US cup used here equals 236.5882365 milliliters. Recipes from other countries may use a 250-milliliter metric cup or another convention. Check the recipe source before substituting.
Imperial units matter most here. An imperial fluid ounce is about 28.4 milliliters against the US 29.6, and an imperial pint is about 568 milliliters against the US 473 — roughly 20 percent larger. Selecting “US pints” for a British recipe applies that error silently. Australian tablespoons are 20 milliliters rather than the US 14.79.
Kitchen measuring tools have limited precision. A mathematically exact conversion may need practical rounding, especially for very small spoon measurements.
Volume is not weight
The same volume of flour, sugar, butter, and water can have different weights. Packing and measuring technique can also change the amount. Use a reliable ingredient-specific reference when a recipe calls for grams or ounces by weight.
Frequently asked questions
Is a US cup the same size as a metric cup?
No. This calculator uses the US customary cup of 236.5882365 milliliters. A metric cup is commonly 250 milliliters, and the US legal cup used on nutrition labels is 240 milliliters, so check which standard your recipe follows.
Can I use this to convert cups of flour to grams?
No. This tool converts volume to volume. Converting an ingredient's volume to weight requires its density and can vary with measuring technique.
Are fluid ounces and ounces by weight interchangeable?
No. A fluid ounce measures volume, while an ounce usually measures weight. They are different quantities and cannot be exchanged without ingredient-specific density.
Why do converted amounts contain decimals?
Unit relationships do not always produce whole numbers. The calculator retains useful precision, but you may need to round to a measurement your kitchen tools can reliably make.