US Fluid Ounces to US Cups Converter
1 US fluid ounce = 0.125 US cups
A unit of volume, unrelated to the ounce of mass.
US recipes may also use the "legal" cup of exactly 240 mL used on nutrition labels.
1 US fluid ounce equals 0.125 US cups
How to convert US fluid ounces to US cups
Choose the named US, Imperial or metric unit before converting a recipe or container size. A US liquid gallon is 3.785411784 L; an Imperial gallon is 4.54609 L. Volume alone cannot give ingredient mass without density.
cup = fl oz × 1/8One US fluid ounce is 1/8 US cups, so a single multiplication converts any value.
1.25 cup = 10 × 1/8A unit of volume, unrelated to the ounce of mass.
US recipes may also use the "legal" cup of exactly 240 mL used on nutrition labels.
US fluid ounces to US cups conversion table
Common values in US fluid ounces, converted to US cups.
| US fluid ounces (fl oz) | US cups (cup) |
|---|---|
| 1 | 0.125 |
| 2 | 0.25 |
| 3 | 0.375 |
| 4 | 0.5 |
| 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 |
About these units
US fluid ouncefl oz
One 128th of a US gallon: about 29.57 mL.
US cupcup
The US customary cup: 8 US fluid ounces, about 236.6 mL.
Sources and precision
Table results are rounded to 8 significant digits; formula constants may be rounded to 10. Worked example answers use 6 significant digits. The converter starts at 6 significant digits and lets you change display precision. Calculations use the stored factors without intermediate rounding. Exact unit definitions do not make an input measurement more precise; conventional and measured factors follow the assumptions stated here.