How to convert US fluid ounces to US cups
Divide the number of US fluid ounces by 8. That is all there is to it, because the factor between US fluid ounces and US cups never changes.
Formula
cup = fl oz ÷ 8
Example: 8 US fluid ounces ÷ 8 = 1 US cup.
Fluid Ounces to Cups chart
| US fluid ounces (fl oz) | US cups (cup) |
|---|---|
| 0.5 fl oz | 0.0625 cup |
| 1 fl oz | 0.125 cup |
| 2 fl oz | 0.25 cup |
| 3 fl oz | 0.375 cup |
| 4 fl oz | 0.5 cup |
| 5 fl oz | 0.625 cup |
| 6 fl oz | 0.75 cup |
| 8 fl oz | 1 cup |
| 10 fl oz | 1.25 cup |
| 12 fl oz | 1.5 cup |
| 16 fl oz | 2 cup |
| 20 fl oz | 2.5 cup |
| 24 fl oz | 3 cup |
| 32 fl oz | 4 cup |
| 40 fl oz | 5 cup |
| 50 fl oz | 6.25 cup |
| 64 fl oz | 8 cup |
| 100 fl oz | 12.5 cup |
| 128 fl oz | 16 cup |
Values are rounded to at most four decimals. The converter above shows more digits.
About the units
One US fluid ounce is 0.02957352956 liters.
One US cup is 0.2365882365 liters.
Need the other direction? Use the Cups to Fluid Ounces converter. For every volume unit at once, open the Volume Converter.
Frequently asked questions
How many US cups are in a US fluid ounce?
There are 0.125 US cups in one US fluid ounce. In the other direction, one US cup is 8 US fluid ounces.
How do I convert US fluid ounces to US cups?
Divide the number of US fluid ounces by 8. For example: 8 US fluid ounces ÷ 8 = 1 US cup.
What is 20 US fluid ounces in US cups?
20 US fluid ounces equals 2.5 US cups.