How many ounces in a cup?
There are 8 fluid ounces in one cup. A US cup is 8 fluid ounces. For dry ingredients, weigh instead: a cup of flour is about 4.25 ounces by weight.
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Conversion chart
| Cup | Fluid ounces |
|---|---|
| 0.25 cup | 2 fluid ounces |
| 0.5 cup | 4 fluid ounces |
| 1 cup | 8 fluid ounces |
| 2 cup | 16 fluid ounces |
| 3 cup | 24 fluid ounces |
| 4 cup | 32 fluid ounces |
| 5 cup | 40 fluid ounces |
| 10 cup | 80 fluid ounces |
In practice
A US cup is 8 fluid ounces. For dry ingredients, weigh instead: a cup of flour is about 4.25 ounces by weight. When a recipe or plan has to be exact, convert once and write the number down instead of converting each step.
Frequently asked questions
How many ounces in a cup?
There are 8 fluid ounces in one cup.
How do I convert cup to fluid ounces?
Multiply the number of cups by 8.
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