1 US cup = 8 US fluid ounces
Convert US cups to US fluid ounces.
Both directions on one page — swap the units and the whole thing runs backwards.
Type a value, or “5cm to in”
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The formula
fl oz (US) = cup (US) × 8
Worked through with a real value: 10 US cups = 80 US fluid ounces.
Going the other way: cup (US) = fl oz (US) × 0.125, so 1 US fluid ounce = 0.125 US cups.
What each unit is
- US cup cup (US)
- 236.6 millilitres. The standard measuring cup in American recipes. A US cup is smaller than an imperial cup.
- US fluid ounce fl oz (US)
- 29.57 millilitres. The US liquid ounce for measuring volume. Not the same as weight ounces.
Where these come from
- 1 US cup = 236.5882365 milliliters
- 1 US fluid ounce = 29.5735295625 milliliters
Every other number on this page is computed from those, and each category is pinned to conversions worked out by hand from the units' primary definitions before it ships.
Conversion tables
| US cups (cup (US)) | US fluid ounces (fl oz (US)) |
|---|---|
| 1 | 8 |
| 2 | 16 |
| 3 | 24 |
| 4 | 32 |
| 5 | 40 |
| 6 | 48 |
| 7 | 56 |
| 8 | 64 |
| 9 | 72 |
| 10 | 80 |
| 20 | 160 |
| 25 | 200 |
| 50 | 400 |
| 75 | 600 |
| 100 | 800 |
| US fluid ounces (fl oz (US)) | US cups (cup (US)) |
|---|---|
| 1 | 0.125 |
| 2 | 0.25 |
| 3 | 0.375 |
| 4 | 0.5 |
| 5 | 0.625 |
| 6 | 0.75 |
| 7 | 0.875 |
| 8 | 1 |
| 9 | 1.125 |
| 10 | 1.25 |
| 20 | 2.5 |
| 25 | 3.125 |
| 50 | 6.25 |
| 75 | 9.375 |
| 100 | 12.5 |
Questions
How many US fluid ounces are in a US cup?
1 US cup = 8 US fluid ounces.
How do I convert US cups to US fluid ounces?
Use fl oz (US) = cup (US) × 8. For example, 10 US cups = 80 US fluid ounces.
How many US cups are in one US fluid ounce?
1 US fluid ounce = 0.125 US cups.
What is 10 US cups in US fluid ounces?
10 US cups = 80 US fluid ounces.
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