Volume conversion
4 fl oz to cups
0.5 cups
4 US fluid ounces = 0.5 US cups. Exact factor: cups = fl oz ÷ 8.
Live converter
Edit either field — the other updates instantly. Type decimal values like 38.4.
The formula
cups = fl oz ÷ 8
Worked example: 4 × 0.125 = 0.5 cups.
Values near 4 fl oz
| fl oz | cups |
|---|---|
| 3.25 | 0.406 |
| 3.5 | 0.438 |
| 3.75 | 0.469 |
| 4this page | 0.5 |
| 4.25 | 0.531 |
| 4.5 | 0.563 |
| 4.75 | 0.594 |
Frequently asked
How do you convert US fluid ounces to US cups?
Apply the formula cups = fl oz ÷ 8. Enter any value in the live converter above and the result updates as you type.
What is 4 fl oz in cups?
4 fl oz equals 0.5 cups. The reference table below shows the values immediately around 4 fl oz.
Is this conversion exact?
Yes. If a recipe gives ounces for a dry ingredient it usually means weight, not fluid ounces — check before pouring.