Direct conversion
cups to fluid ounces Converter
Convert cup (US) [cup US] to fluid ounce (US) [fl oz US] instantly with formula, examples, chart, and FAQs.
cups to fluid ounces Converter
Instant results1 cup (US) [cup US] = 8 fluid ounce (US) [fl oz US]
Conversion Formula
1 cup (US) [cup US] = 8 fluid ounce (US) [fl oz US]
Example: 1 cup (US) [cup US] equals 8 fluid ounce (US) [fl oz US].
Examples
Practical Uses for cups to fluid ounces
Sources and Accuracy
Volume conversions use cubic metre as the reference unit. US liquid units, metric litres, and cubic units are converted with fixed factors stored in the unit table.
Displayed results are rounded for readability. The calculator keeps enough precision for everyday use and switches to scientific notation for very large or very small values. Last reviewed: 2026-05-21.
How to Convert
- Enter the value in the “From value” field.
- Confirm the source unit is cup (US) [cup US].
- Confirm the target unit is fluid ounce (US) [fl oz US].
- Read the instant result and formula.
Where This Conversion Is Used
cups to fluid ounces Conversion Chart
Open full chart →| cup (US) [cup US] | fluid ounce (US) [fl oz US] |
|---|---|
| 1 | 8 |
| 2 | 16 |
| 5 | 40 |
| 10 | 80 |
| 20 | 160 |
| 25 | 200 |
| 50 | 400 |
| 100 | 800 |
| 1000 | 8000.000001 |
Frequently Asked Questions
How do I convert cup (US) to fluid ounce (US)?
Use this formula: 1 cup (US) [cup US] = 8 fluid ounce (US) [fl oz US] Enter your value in the calculator and the result updates instantly.
How many fluid ounce (US) are in 1 cup (US)?
1 cup (US) [cup US] equals 8 fluid ounce (US) [fl oz US].
Can I reverse this conversion?
Yes. Use the swap button in the calculator or open the related reverse conversion link when it is listed on this page.