Cups to Fluid Ounces
Convert cups (cup) to fluid ounces (fl oz) instantly — with formula and reference table.
cup
fl oz
Quick answer: 1 cup = 8 fl oz. To convert cups to fluid ounces, multiply by cup × 8.
Converting cups to fluid ounces
This converter changes a value in cups (cup) into fluid ounces (fl oz). One cup equals 8 fl oz. One US cup equals 8 US fluid ounces. The conversion runs entirely in your browser — enter a value and the result updates instantly, in either direction.
Formula
fl oz = cup × 8
Example
Convert 10 cup to fl oz: 10 × 8 = 80 fl oz.
Cups to Fluid Ounces conversion table
| Cups (cup) | Fluid Ounces (fl oz) |
|---|---|
| 1 cup | 8 fl oz |
| 2 cup | 16 fl oz |
| 3 cup | 24 fl oz |
| 5 cup | 40 fl oz |
| 10 cup | 80 fl oz |
| 20 cup | 160 fl oz |
| 25 cup | 200 fl oz |
| 50 cup | 400 fl oz |
| 100 cup | 800 fl oz |
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How to use this converter
- Enter a value in the cups (cup) field.
- Read the converted value in fluid ounces (fl oz) below.
- Type into the fl oz field instead to convert in reverse, or use the swap button.
Frequently asked questions
How many fluid ounces are in a cup?
1 US cup equals 8 fluid ounces.
How do I convert 3 cups to fl oz?
3 times 8 = 24 fluid ounces.
How many fl oz in half a cup?
Half a US cup is 4 fluid ounces.
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