CookMeasureUS cups to fluid ounces table
| US cups | fluid ounces |
|---|---|
| ⅛ cup | 1 fl oz |
| ¼ cup | 2 fl oz |
| ⅓ cup | 2.67 fl oz (2 ⅝) |
| ½ cup | 4 fl oz |
| ⅔ cup | 5.33 fl oz (5 ¼) |
| ¾ cup | 6 fl oz |
| 1 cup | 8 fl oz |
| 1 ½ cup | 12 fl oz |
| 2 cup | 16 fl oz |
| 3 cup | 24 fl oz |
| 4 cup | 32 fl oz |
| 5 cup | 40 fl oz |
The formula
fluid ounces = US cups × 8. Going the other way, 1 fluid ounce = 0.125 US cups.
This uses the US cup (236.588 ml). If your recipe is Australian, Canadian or from New Zealand it probably means a 250 ml metric cup — switch the unit in the calculator.
Converting to grams instead? Volume only becomes weight once you know the ingredient — a cup of flour and a cup of honey differ by almost 3×. Use the cups to grams converter.
Questions cooks ask
How many ounces in a cup?
1 US cup is 8 fluid ounces (about 8).
How do I convert US cups to fluid ounces?
Multiply the number of US cups by 8. To go back, multiply fluid ounces by 0.125.
Is this for US or UK measurements?
This uses the US cup (236.588 ml). If your recipe is Australian, Canadian or from New Zealand it probably means a 250 ml metric cup — switch the unit in the calculator.