Volume conversion
18 cups to fl oz
144 fl oz
18 US cups = 144 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: 18 × 8 = 144 fl oz.
Values near 18 cups
| cups | fl oz |
|---|---|
| 15 | 120 |
| 16 | 128 |
| 17 | 136 |
| 18this page | 144 |
| 19 | 152 |
| 20 | 160 |
| 21 | 168 |
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 18 cups in fl oz?
18 cups equals 144 fl oz. The reference table below shows the values immediately around 18 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.