CookMeasureFluid ounces to US cups table
| fluid ounces | US cups |
|---|---|
| 0.5 fl oz | 0.0625 cup |
| 1 fl oz | 0.125 cup (⅛) |
| 2 fl oz | 0.25 cup (¼) |
| 3 fl oz | 0.375 cup (⅜) |
| 4 fl oz | 0.5 cup (½) |
| 5 fl oz | 0.625 cup (⅝) |
| 6 fl oz | 0.75 cup (¾) |
| 8 fl oz | 1 cup |
| 10 fl oz | 1.25 cup (1 ¼) |
| 12 fl oz | 1.5 cup (1 ½) |
| 16 fl oz | 2 cup |
| 20 fl oz | 2.5 cup (2 ½) |
| 24 fl oz | 3 cup |
| 32 fl oz | 4 cup |
The formula
US cups = fluid ounces × 0.125. Going the other way, 1 US cup = 8 fluid ounces.
A US fluid ounce is 29.57 ml. The UK imperial fluid ounce is slightly smaller at 28.41 ml; both are in the calculator. Fluid ounces measure volume, not weight.
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 cups is 8 ounces?
8 fluid ounces is 1 US cups (about 1).
How do I convert fluid ounces to US cups?
Multiply the number of fluid ounces by 0.125. To go back, multiply US cups by 8.
Is this for US or UK measurements?
A US fluid ounce is 29.57 ml. The UK imperial fluid ounce is slightly smaller at 28.41 ml; both are in the calculator. Fluid ounces measure volume, not weight.