Cups to Fluid Ounces Converter

Convert cups to fluid ounces with a free calculator

How to Convert Cups to Fluid Ounces

Formula: 1 cup = 8 fl oz

Multiply your cups value by 8 to get the equivalent in fluid ounces. The conversion factor 8 is based on the internationally accepted definitions of both units.

Cups to Fluid Ounces Reference Table

Cups (cup)Fluid Ounces (fl oz)
1 cup8 fl oz
5 cup40 fl oz
10 cup80 fl oz
25 cup200 fl oz
50 cup400 fl oz
100 cup800 fl oz
500 cup4,000 fl oz
1000 cup8,000 fl oz

Related Conversions

Fluid Ounces to Cups All Unit Conversions

Frequently Asked Questions

How do I convert cups to ounces for a recipe? +
Multiply the number of cups by 8 to get fluid ounces. For example, 2.5 cups = 20 fl oz.
Does 1 cup of flour weigh 8 ounces? +
No. 1 cup is 8 fluid ounces by volume, but 1 cup of all-purpose flour weighs about 4.25 ounces. Volume and weight are different.
How many ounces are in a coffee cup? +
A standard US cup is 8 fl oz, but most coffee mugs hold 10-12 fl oz. Coffee shop sizes vary even more.