Convert cups to oz
1 cup equals 8 fluid ounces. To convert cups to fluid ounces, multiply the number of cups by 8: for example, 10 cup is 80 fl oz. Ethical Tube's free cups to oz converter does the math as you type, and the chart below lists common values.
1 cup = 8 fl oz
- 1 cup
- 8 fl oz
- 1 fl oz
- 0.125 cup
- Formula
- fl oz = cup × 8
- Measures
- Volume
- Price
- Free
- Works offline
- Yes
Conversion chart
cups to oz chart
| Cups (cup) | Fluid ounces (fl oz) |
|---|---|
| 1 cup | 8 fl oz |
| 2 cup | 16 fl oz |
| 3 cup | 24 fl oz |
| 4 cup | 32 fl oz |
| 5 cup | 40 fl oz |
| 6 cup | 48 fl oz |
| 8 cup | 64 fl oz |
| 10 cup | 80 fl oz |
| 12 cup | 96 fl oz |
| 15 cup | 120 fl oz |
| 20 cup | 160 fl oz |
| 25 cup | 200 fl oz |
| 50 cup | 400 fl oz |
| 100 cup | 800 fl oz |
How it works
How to convert cups to oz
Know the formula
fl oz = cup × 8. In words: multiply the number of cups by 8.
Work an example
10 cup → 80 fl oz. Round to two or three decimal places for everyday use.
Or type it in
Enter any value in the converter above and the answer appears instantly, in both directions.
Good to know
About volume units
- These are US customary measures: 1 US cup is 236.6 ml, 1 US fluid ounce is 29.57 ml, and 1 US gallon is 3.785 liters.
- UK (imperial) measures are different: an imperial fluid ounce is 28.41 ml and an imperial gallon is 4.546 liters.
- Nutrition labels in the US round a cup to 240 ml and a fluid ounce to 30 ml.
FAQ
Questions, answered
How many fluid ounces are in a cup?
There are 8 fluid ounces in 1 cup. To convert cups to fluid ounces, multiply the number of cups by 8.
What is 10 cups in oz?
10 cups is 80 fluid ounces.
How do you convert oz back to cups?
Multiply the number of fluid ounces by 0.125. 1 fluid ounce is 0.125 cups.
Is this cups to oz converter free?
Yes. It's free and works in any browser, even offline once the page has loaded. The answer updates as you type, and nothing you enter is sent anywhere.
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