Cooking & Baking

Customary cup
Coffee carafe showing gradations for measuring water (right) and brewed coffee (left) in multiples of non-standard US customary cups.

In the United States, the customary cup is half of a liquid pint.
1 US customary cup = 1⁄16 US customary gallon
= 1⁄4 US customary quart
= 1⁄2 US customary pint
= 8 US customary fluid ounces
= 16 US customary tablespoons
= 48 US customary teaspoons
= 236.5882365 milliliters exactly
= 15.7725491 international tablespoons
= 11.829411825 Australian tablespoons
≈ 5⁄6 imperial cups
≈ 8 1⁄3 imperial fluid ounces

Legal cup
The cup currently used in the United States for nutrition labelling is defined in United States law as 240 ml.[1][2][3]
1 US "legal" cup = 240 millilitres
= 16 international tablespoons
= 12 Australian tablespoons
= 8 US nutritional fluid ounces (30 ml each)
≈ 8.12 US customary fluid ounces
≈ 8.45 imperial fluid ounces

Coffee cup
A "cup" of coffee in the US is usually 4 fluid ounces (118 ml), brewed using 5 fluid ounces (148 ml) of water. Coffee carafes used with drip coffee makers, e.g. Black and Decker models, have markings for both water and brewed coffee as the carafe is also used for measuring water prior to brewing.[5] A 12-cup carafe, for example, has markings for 4, 6, 8, 10, and 12 cups of water or coffee, which correspond to 20, 30, 40, 50, and 60 US fluid ounces (0.59, 0.89, 1.18, 1.48, and 1.77 litres) of water or 16, 24, 32, 40, and 48 US fluid ounces (0.47, 0.71, 0.95, 1.18, and 1.42 litres) of brewed coffee respectively, the difference being the volume absorbed by the coffee grounds and lost to evaporation during brewing.