How Many Fluid Ounces in a Cup?
Quick Answer
There are 8 fluid ounces in a US cup.
1 cup = 8 fluid ounces
Understanding the Conversion
One US cup equals exactly 8 US fluid ounces or approximately 236.59 milliliters. Note that fluid ounces measure volume, not weight. A fluid ounce of water happens to weigh approximately one ounce, but this varies for other liquids.
Formula
1 cup = 8 fluid ounces
Common Examples
| Description | Value |
|---|---|
| A standard glass of water | 8 fl oz (1 cup) |
| A can of soda | 12 fl oz (1.5 cups) |
| A large coffee | 16 fl oz (2 cups) |
Quick Reference Table
Use this table for quick conversions between cup and fluid ounces:
| cup | fluid ounces |
|---|---|
| 1 | 8 |
| 2 | 16 |
| 5 | 40 |
| 10 | 80 |
| 25 | 200 |
| 50 | 400 |
| 100 | 800 |
Frequently Asked Questions
How Many Fluid Ounces in a Cup?
There are 8 fluid ounces in a US cup. One US cup equals exactly 8 US fluid ounces or approximately 236.59 milliliters. Note that fluid ounces measure volume, not weight. A fluid ounce of water happens to weigh approximately one ounce, but this varies for other liquids.
What is the formula to convert cup to fluid ounces?
The formula is: 1 cup = 8 fluid ounces. To convert, multiply the number of cups by 8 to get the equivalent in fluid ounces.
How do I convert fluid ounces to cup?
To convert fluid ounces to cup, divide the number of fluid ounces by 8. For example, 40 fluid ounces equals 5 cups.
Related "How Many" Questions
How Many Fluid Ounces in a Pint?
There are 16 fluid ounces in a US pint.
How Many Fluid Ounces in a Quart?
There are 32 fluid ounces in a US quart.
How Many Fluid Ounces in a Gallon?
There are 128 fluid ounces in a US gallon.
How Many Milliliters in a Cup?
There are approximately 236.59 milliliters in a US cup.