US Cups to US Fluid Ounces Converter
1 US cup = 8 US fluid ounces
US recipes may also use the "legal" cup of exactly 240 mL used on nutrition labels.
A unit of volume, unrelated to the ounce of mass.
1 US cup equals 8 US fluid ounces
How to convert US cups to US fluid ounces
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.
fl oz = cup × 8One US cup is 8 US fluid ounces, so a single multiplication converts any value.
80 fl oz = 10 × 8US recipes may also use the "legal" cup of exactly 240 mL used on nutrition labels.
A unit of volume, unrelated to the ounce of mass.
US cups to US fluid ounces conversion table
Common values in US cups, converted to US fluid ounces.
| US cups (cup) | US fluid ounces (fl oz) |
|---|---|
| 1 | 8 |
| 2 | 16 |
| 3 | 24 |
| 4 | 32 |
| 5 | 40 |
| 10 | 80 |
| 20 | 160 |
| 25 | 200 |
| 50 | 400 |
| 100 | 800 |
| 250 | 2,000 |
| 500 | 4,000 |
| 1,000 | 8,000 |
About these units
US cupcup
The US customary cup: 8 US fluid ounces, about 236.6 mL.
US fluid ouncefl oz
One 128th of a US gallon: about 29.57 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.