Quick answer: 1 US cup equals 8 fluid ounces. To convert fluid ounces to cups, divide by 8. For example, 4 fl oz equals ½ cup and 16 fl oz equals 2 cups.
fl oz
cups
Result
1cups
8 fl oz ÷ 8 = 1 cup
Quick amounts
Ounces to cups formula
This page converts US fluid ounces to US cups. Divide fluid ounces by 8 to get cups. If a recipe lists weight ounces for flour, sugar, or another dry ingredient, do not use this conversion: weight ounces need an ingredient-specific conversion.
Fluid ounces to cups chart
| Fluid ounces | US cups |
|---|---|
| 1 fl oz | ⅛ cup |
| 2 fl oz | ¼ cup |
| 4 fl oz | ½ cup |
| 6 fl oz | ¾ cup |
| 8 fl oz | 1 cup |
| 16 fl oz | 2 cups |
| 32 fl oz | 4 cups |
Frequently asked questions
How many cups is 8 ounces?
Eight fluid ounces equal 1 US cup. Eight weight ounces may equal a very different volume depending on the ingredient.
How many cups is 16 ounces?
Sixteen fluid ounces equal 2 US cups.
Related converters
For spoon measures, use the teaspoons to ounces converter or tablespoons to ounces.
