Kitchen Volume Conversions for Cups, mL & Fluid Ounces

Volume is how much space an amount occupies. Match the cup or fluid-ounce standard before converting a recipe, measuring jug or package label.

Open a volume converter

Six cup standards and three fluid ounces

US customary, metric and Imperial are distinct measuring systems. Use the FDA equivalents for US nutrition labels that call for those household measures. Japanese recipes may use a cooking cup or the rice measure that comes with a rice cooker. Check the markings and the recipe instructions before treating them as interchangeable.

Capacity of one cup by standard
Unit standard	mL per unit
US cup	≈ 236.5882
FDA label cup	240
metric cup	250
Imperial cup	≈ 284.1306
Japanese cooking cup	200
Japanese rice cup	180

≈ marks an estimate or rounded value. Sources Unicode CLDR 48 unit conversions · FDA nutrition labeling household measures · Japan MAFF cooking and rice cup sizes.

Capacity of one fluid ounce by standard
Unit standard	mL per unit
US fl oz	≈ 29.5735
Imperial fl oz	≈ 28.4131
FDA label fl oz	30

≈ marks an estimate or rounded value. Sources Unicode CLDR 48 unit conversions · FDA nutrition labeling household measures.

Pints, quarts and gallons

The next table uses US liquid units. Imperial measures and US dry measures have separate definitions. Check which system a recipe or container specifies before using a household shortcut.

US liquid pints, quarts, and gallons
Quantity	US customary cups	US fl oz
1 US liquid pint	2	16
1 US liquid quart	4	32
1 US liquid gallon	16	128

≈ marks an estimate or rounded value. Sources Unicode CLDR 48 unit conversions.

Imperial and metric liquid measures

Check the capacity printed on a container. A liter bottle uses metric units. A jug marked in Imperial pints uses a different unit from a US liquid pint.

Imperial liquid volumes in milliliters
Unit standard	mL per unit
imp pt	≈ 568.2613
imp qt	1136.5225
imp gal	4546.09
Imperial fl oz	≈ 28.4131

≈ marks an estimate or rounded value. Sources UK Weights and Measures Act 1985, Schedule 1 · Unicode CLDR 48 unit conversions.

Metric liters and milliliters
Unit standard	mL per unit
L	1000
mL	1

≈ marks an estimate or rounded value. Sources Unicode CLDR 48 unit conversions.

Spoons to milliliters

The capacity of a tablespoon depends on the standard. Marked teaspoons also come in US customary and metric sizes. The reference compares both spoon families in mL. For interactive spoon conversions, open cups to tablespoons or tablespoons to teaspoons.

Capacity of one spoon by standard
Unit standard	mL per unit
US tbsp	≈ 14.7868
metric tbsp	15
Australian tbsp	20
US tsp	≈ 4.9289
metric tsp	5

≈ marks an estimate or rounded value. Sources Unicode CLDR 48 unit conversions · FDA nutrition labeling household measures · NSW Health Australian cup and spoon measures.

Read the cup-size guide and source directory for the definitions behind the tables.