Unitly

volume conversion

How many fluid ounces are in 1 cup?

Quick answer, a live calculator, and reference values for converting cups to fluid ounces.

Main answer
1 cup = 8 fluid ounces
Result
1 cup = 8 fluid ounces

Factor: 8

There are 8 fluid ounces in 1 cup.

1 cup equals 8 fluid ounces. A cup is a common volume unit for liquids and recipe measurements. A fluid ounce is another volume unit you'll often see in kitchens and packaging. To convert any amount, multiply the number of cups by 8 to get fluid ounces. Results below use standard international conversion factors; round as needed for recipes or construction.
Need the other direction?
Convert fluid ounces to cups.

Examples

  • 1 cup
    8 fluid ounces
  • 5 cups
    40 fluid ounces
  • 10 cups
    80 fluid ounces
  • 100 cups
    800 fluid ounces

Frequently asked questions

How many fluid ounces are in 1 cup?
There are 8 fluid ounces in 1 cup.
How do I convert cups to fluid ounces?
Multiply the cups value by 8. You can also type any number into the calculator on this page for an instant result.
Is the cups to fluid ounces conversion exact?
This page uses internationally recognized conversion factors. Displayed values may be rounded for readability—keep extra decimals when a recipe, blueprint, or lab measurement needs higher precision.

Related conversions

fluid ounces to cupscups to milliliterscups to literscups to cubic meterscups to teaspoonscups to tablespoonscups to pintscups to quarts