How many ounces in a cup?
Answer
8 US fluid ounces
1 US cup = 8 US fluid ounces (cup → fl oz)
One US cup holds 8 US fluid ounces (about 236.6 mL). US nutrition labels round the cup to 240 mL, about 8.1 fl oz.
Fluid ounces measure volume, not weight. A cup of water weighs about 8.3 oz, but a cup of all-purpose flour weighs only about 4.2 oz (120 g).
A metric cup (Australia, New Zealand, Canada) is 250 mL, about 8.45 US fl oz.
US Cups to US fluid ounces
| US Cups | US Fluid Ounces |
|---|---|
| ⅛ | 1 |
| ¼ | 2 |
| ⅓ | 2.667 |
| ½ | 4 |
| ⅔ | 5.333 |
| ¾ | 6 |
| 1 | 8 |
| 1½ | 12 |
| 2 | 16 |
| 3 | 24 |
| 4 | 32 |
| 6 | 48 |
| 8 | 64 |
Convert any amount
Cups to oz Converter (US Cups to US Fluid Ounces) → · Printable cooking conversion chart →