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oz to Cups Converter

Convert US fluid ounces to US cups using 8 US fl oz = 1 US cup, with tablespoon and milliliter equivalents. This converts volume, not mass.

Content updated October 7, 2026 · Details

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Content updated

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Cups

Inputs ↓
Converted cups
2 cups
US fluid ounces entered
16 fl oz
US cups
2 cups
Tablespoons
32 tbsp
Milliliters
473.18 mL

16 fl oz equals 2 US cups because 8 US fluid ounces make 1 cup.

Enter a liquid volume in US fluid ounces. Eight US fluid ounces equal one US cup.
fl oz

Results update as you type.

Result links include your inputs in the URL. Anyone with the link can read them; avoid sharing sensitive values.

Compare scenarios

Save a result, change your inputs, then compare. Up to three saved scenarios for this visit.

Worked example

fluidOunces: 16

Result: 2 cups

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This calculator uses the US liquid-volume relationships 8 US fluid ounces = 1 US cup and 1 US fluid ounce = 29.5735295625 mL. It converts volume, not ounces of mass.

Formula

US cups=US fl oz8\text{US cups}=\frac{\text{US fl oz}}{8}

For 16 US fl oz, the result is 2 cups. Supporting tablespoon and milliliter values are calculated from the same unrounded input before rounding.

Related: the cups to oz converter for the reverse direction, plus the milliliters to cups calculator and ml to oz converter.

Identify volume ounces

Use US fluid ounces rather than weighed ounces. An ingredient measured by mass needs density for a volume conversion. Save the fluid-ounce label with the cup result so a scale reading is not mistaken for the same quantity.

Frequently asked questions

How many US fluid ounces are in a US cup?

One US cup contains 8 US fluid ounces. Divide fluid ounces by 8 to obtain cups.

Sources

Related calculators

ml to oz ConverterConvert milliliters to US fluid ounces using 1 US fl oz = 29.5735295625 mL, with tablespoon and cup equivalents. This converts volume, not mass.Ounces to Milliliters CalculatorConvert US fluid ounces to milliliters using the exact 1 US fl oz = 29.5735295625 mL relationship. Mass ounces are outside this conversion.Cups to Pints ConverterConvert US cups to pints for scaling recipes into pint jars, deli tubs, cartons, freezer containers, and small-batch food prep.Fluid Ounces to Pounds ConversionConvert US fluid ounces to pounds using a water approximation or a density you provide.Grams to fl oz ConverterConvert grams to US fluid ounces with explicit ingredient density presets for water, milk, oil, honey, flour, sugar, and custom materials.Cubic Centimeters to Fluid Ounces ConverterConvert cubic centimeters to U.S. fluid ounces and show metric and imperial comparisons.
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oz to Cups Converter updated at

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