Cup (US) to Fluid Ounce (US)Converter
Instantly convert Cup (US) (cup) to Fluid Ounce (US) (fl oz). Free, accurate, and easy to use.
How to Convert Cup (US) to Fluid Ounce (US)
To convert Cup (US) (cup) to Fluid Ounce (US) (fl oz), multiply your value by 8.
Example: 5 cup × 8 = 40 fl oz
What is a Cup (US)?
The US cup equals exactly 8 US fluid ounces or approximately 236.588 milliliters. It is the foundation of most American baking recipes and is measured with standardized cup-shaped tools. The metric cup used in some countries equals 250 mL. There are 2 cups in a US pint, 4 in a quart, and 16 in a gallon.
What is a Fluid Ounce (US)?
The US fluid ounce equals approximately 29.574 milliliters, or 1/128 of a US gallon. Despite sharing a name with the mass unit ounce, it measures only volume. The UK imperial fluid ounce differs, equaling 28.413 mL (1/160 of an imperial gallon). There are 8 US fluid ounces in a cup and 128 in a gallon.
Cup (US) to Fluid Ounce (US) Conversion Table
| Cup (US) (cup) | Fluid Ounce (US) (fl oz) |
|---|---|
| 0.001 cup | 0.008 fl oz |
| 0.01 cup | 0.08 fl oz |
| 0.1 cup | 0.8 fl oz |
| 0.5 cup | 4 fl oz |
| 1 cup | 8 fl oz |
| 2 cup | 16 fl oz |
| 5 cup | 40 fl oz |
| 10 cup | 80 fl oz |
| 20 cup | 160 fl oz |
| 50 cup | 400 fl oz |
| 100 cup | 800 fl oz |
| 200 cup | 1600 fl oz |
| 500 cup | 4000 fl oz |
| 1000 cup | 8000 fl oz |
| 5000 cup | 40000 fl oz |
| 10000 cup | 80000 fl oz |
| 50000 cup | 400000 fl oz |
| 100000 cup | 800000 fl oz |
| 1000000 cup | 8000000 fl oz |
| 1000000000 cup | 8.0000e+9 fl oz |
Frequently Asked Questions
How do I convert Cup (US) to Fluid Ounce (US)?
Multiply the Cup (US) value by 8. Formula: fl oz = cup × 8. Example: 10 cup = 80 fl oz.
How many Fluid Ounce (US) are in one Cup (US)?
One Cup (US) (cup) equals 8 Fluid Ounce (US) (fl oz).
How many Cup (US) are in one Fluid Ounce (US)?
One Fluid Ounce (US) (fl oz) equals 0.125 Cup (US) (cup).
What is the exact conversion factor from Cup (US) to Fluid Ounce (US)?
The conversion factor is 8. Multiply any cup value by this number to get fl oz. For the reverse, multiply by 0.125.
How do I convert Fluid Ounce (US) back to Cup (US)?
Divide by 8, or equivalently multiply by 0.125. Formula: cup = fl oz ÷ 8.
Is the Cup (US)-to-Fluid Ounce (US) conversion internationally standardized?
Yes. Both units are defined by international standards (SI or the international yard/pound agreement), so the conversion factor 8 is exact and universally agreed upon.