Cups to Fluid Ounces
( cup → fl oz )
Instantly convert US cups to US fluid ounces. Enter any value below and get an accurate result with the full formula and reference table.
How to Convert Cups to Fluid Ounces
To convert US cups to US fluid ounces, multiply the number of cups by 8. This is because one cup is defined as exactly 8 fluid ounces in the US customary system.
Step-by-Step Example
Let’s convert 2 cups to fluid ounces:
1. Multiply by 8: 2 × 8 = 16
2. So 2 cups equals 16 fl oz.
For a smaller amount, 0.5 cup × 8 = 4 fl oz.
When You’d Use Each Unit
Cups are commonly used in the US for measuring ingredients like flour, sugar, milk, or water in recipes. Fluid ounces are used for measuring liquids like milk, water, or juice, especially in recipes and beverage serving sizes. Converting between them helps scale recipes accurately and understand serving sizes.
Common cups values converted to fluid ounces — typical values highlighted.
| Cups (cup) | Fluid Ounces (fl oz) | Approximate |
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