US cups to US fluid ounces – US cup to US fluid ounce Converter
1 cup = 8 fl oz
Formula
fl oz = cup × 8
US cups to US fluid ounces conversion table
| US cups (cup) | US fluid ounces (fl oz) |
|---|---|
| 0.5 cup | 4 fl oz |
| 1 cup | 8 fl oz |
| 2 cup | 16 fl oz |
| 3 cup | 24 fl oz |
| 5 cup | 40 fl oz |
| 10 cup | 80 fl oz |
| 20 cup | 160 fl oz |
| 25 cup | 200 fl oz |
| 50 cup | 400 fl oz |
| 75 cup | 600 fl oz |
| 100 cup | 800 fl oz |
| 250 cup | 2000 fl oz |
| 500 cup | 4000 fl oz |
| 1000 cup | 8000 fl oz |
| 5000 cup | 40000 fl oz |
US cups and US fluid ounces are both volume units. One US cup equals 8 US fluid ounces; enter any value above for an instant result, or use the table for common conversions.
Sanity-check examples
1 cup = 8 fl oz10 cup = 80 fl oz100 cup = 800 fl oz
Common pitfalls and look-alike units
Gallons differ: the US gallon ≈ 3.78541 L while the imperial gallon ≈ 4.546 L — about 20% apart, so check which one a recipe or fuel figure means. A US cup (~236.6 mL) is also not the metric 250 mL cup.
Frequently asked questions
How many US fluid ounces are in a US cup?
1 US cup (cup) equals 8 US fluid ounce (fl oz).
How do I convert US cups to US fluid ounces?
Multiply the US cup value by 8 to get US fluid ounce — for example, 2 US cups = 16 US fluid ounce.
How do I convert US fluid ounces back to US cups?
1 US fluid ounce equals 0.125 US cup. Use the swap button or the reverse conversion page linked on this page.