Volume conversion
5 cups to fl oz
40 fl oz
5 US cups = 40 US fluid ounces. Exact factor: fl oz = cups × 8.
Live converter
Edit either field — the other updates instantly. Type decimal values like 38.4.
The formula
fl oz = cups × 8
Worked example: 5 × 8 = 40 fl oz.
Values near 5 cups
| cups | fl oz |
|---|---|
| 4.25 | 34 |
| 4.5 | 36 |
| 4.75 | 38 |
| 5this page | 40 |
| 5.25 | 42 |
| 5.5 | 44 |
| 5.75 | 46 |
Frequently asked
How do you convert US cups to US fluid ounces?
Apply the formula fl oz = cups × 8. Enter any value in the live converter above and the result updates as you type.
What is 5 cups in fl oz?
5 cups equals 40 fl oz. The reference table below shows the values immediately around 5 cups.
Is this conversion exact?
Yes. Eight fluid ounces to the cup is exact. This measures volume, so it does not tell you the weight of what is in the cup.