How Many Fluid Ounces Are in a US Cup?
The short answer, a converter for any number, and a chart of common amounts.
Quick answer: There are 8 US fluid ounces in 1 US cup. So 1 US fluid ounce is 0.125 US cups.
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The answer
There are 8 US fluid ounces in 1 US cup. So 1 US fluid ounce is 0.125 US cups.
To convert US cups to US fluid ounces, multiply by 8. To go from US fluid ounces to US cups, multiply by 0.125.
These are US customary cups. A US nutrition-label cup is rounded to 240 ml and a metric cup in many countries is 250 ml, so check which cup a recipe means.
Us cups to US fluid ounces chart
| Us cups | Us fluid ounces |
|---|---|
| 1 US cup | 8 US fluid ounces |
| 2 US cups | 16 US fluid ounces |
| 3 US cups | 24 US fluid ounces |
| 4 US cups | 32 US fluid ounces |
| 5 US cups | 40 US fluid ounces |
| 10 US cups | 80 US fluid ounces |
| 20 US cups | 160 US fluid ounces |
| 50 US cups | 400 US fluid ounces |
| 100 US cups | 800 US fluid ounces |
Us fluid ounces to US cups chart
| Us fluid ounces | Us cups |
|---|---|
| 1 US fluid ounce | 0.125 US cups |
| 2 US fluid ounces | 0.25 US cups |
| 5 US fluid ounces | 0.625 US cups |
| 10 US fluid ounces | 1.25 US cups |
| 25 US fluid ounces | 3.125 US cups |
| 50 US fluid ounces | 6.25 US cups |
| 100 US fluid ounces | 12.5 US cups |
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Questions
How many US fluid ounces are in a US cup?
There are 8 US fluid ounces in 1 US cup. So 1 US fluid ounce is 0.125 US cups.
How many US cups are in a US fluid ounce?
There are 0.125 US cups in 1 US fluid ounce.
Is the number exact?
Yes, it uses the exact definitions of the units and is rounded only for display.
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Is anything saved or sent?
No. Everything runs in your browser. Only your own best score, where a page shows one, is kept on your device.
Last updated 2026-10-24. Free to use, no sign-up. Made by ficklestudio26.