Cups to Fluid Ounces

Convert Cups to Fluid Ounces instantly. Free online volume unit converter with exact formula, conversion table and FAQ.

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Formula

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Formula

fl oz = cup × 8

cup = fl oz ÷ 8

Conversion table

1 cup8 fl oz
5 cup40 fl oz
10 cup80 fl oz
20 cup160 fl oz
50 cup400 fl oz
100 cup800 fl oz
500 cup4000 fl oz
1000 cup8000 fl oz
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Frequently asked questions

How many Fluid Ounces are in one Cup?

One Cup equals 8 fl oz.

How do I convert Cups to Fluid Ounces?

Multiply the value in Cups by 8 to get Fluid Ounces. Formula: fl oz = cup × 8.

Is this Cups to Fluid Ounces conversion exact?

Yes. It is based on internationally recognized unit definitions, so the factor 8 is exact to the precision shown.

When is Cups to Fluid Ounces commonly used?

It is commonly used for fuel, beverages, cooking, water storage, agriculture, laboratories, and everyday industrial liquid measurements.

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About this conversion

The Cup and the Fluid Ounce are both units of volume. The US cup is a customary kitchen volume unit equal to one sixteenth of a US gallon, used throughout American recipes. The US fluid ounce is a small customary volume unit commonly used for beverages, medicine dosages, and cooking ingredients. To convert, multiply the Cups value by 8 (formula: fl oz = cup × 8). It is commonly used for fuel, beverages, cooking, water storage, agriculture, laboratories, and everyday industrial liquid measurements. This conversion factor is derived directly from the internationally accepted metric and customary unit definitions, so results are precise and repeatable.