US fluid ounces to US cups Converter
Convert US fluid ounces to US cups instantly. 1 fl oz = 0.125 cup. Free two-way converter with the formula and a quick reference table.
How to convert US fluid ounces to US cups
US cups = US fluid ounces × 0.125
One US fluid ounce equals 0.125 US cups, so to convert US fluid ounces to US cups you multiply by 0.125. Going the other way, one US cup is 8 US fluid ounces. Both units measure volume, so the conversion is an exact ratio that never changes.
10 US fluid ounces = 1.25 US cups. Multiply your US fluid ounce figure by the factor above (or just type it into the box) to convert any amount.
Need the other direction? US cups to US fluid ounces
US fluid ounces to US cups table
| US fluid ounces (fl oz) | US cups (cup) |
|---|---|
| 1 | 0.125 |
| 2 | 0.25 |
| 3 | 0.375 |
| 5 | 0.625 |
| 10 | 1.25 |
| 20 | 2.5 |
| 25 | 3.125 |
| 50 | 6.25 |
| 100 | 12.5 |
| 250 | 31.25 |
| 500 | 62.5 |
| 1,000 | 125 |
Frequently asked questions
How many US cups are in a US fluid ounce?
One US fluid ounce equals 0.125 US cups. So to convert, multiply the number of US fluid ounces by 0.125.
How do I convert US fluid ounces to US cups?
Multiply by 0.125, or simply enter the value in the converter above — it does the math instantly and works both ways.
Is this conversion exact?
Yes — both units measure the same quantity, so the ratio is fixed and this uses the standard internationally-agreed factor.