Cups To Oz Converter
Convert liquid volume from US cups to US fluid ounces. A fundamental conversion for any recipe or kitchen task.
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Essential Kitchen Conversion: Cups to Ounces
The Conversion Formula
In the United States customary system of measurements, the relationship between cups and fluid ounces is simple and direct.
1 US Cup = 8 US Fluid Ounces (fl oz)
This gives us the following formulas:
- Cups to Fluid Ounces: Fluid Ounces = Cups * 8
- Fluid Ounces to Cups: Cups = Fluid Ounces / 8
Common Conversions
Here is a quick reference table for everyday use:
| US Cups | US Fluid Ounces (fl oz) |
|---|---|
| 1/4 Cup | 2 fl oz |
| 1/2 Cup | 4 fl oz |
| 1 Cup | 8 fl oz |
| 2 Cups (1 Pint) | 16 fl oz |
| 4 Cups (1 Quart) | 32 fl oz |
Important Distinction: Fluid Ounces vs. Weight Ounces
It is crucial to distinguish between fluid ounces (a unit of volume) and ounces (a unit of weight/mass). This calculator deals with fluid ounces.
For example, one cup of water weighs approximately 8 ounces, but one cup of flour weighs only about 4.5 ounces. This is because flour is less dense than water. Always pay attention to whether a recipe calls for a volume measurement (cups, fl oz) or a weight measurement (grams, oz).
FAQ
How many ounces in a half cup?
There are 4 fluid ounces in half a US cup.
Is a coffee cup the same as a standard US cup?
Not always. A "cup" of coffee is often considered to be 5-6 fluid ounces, whereas the standard US customary cup used in recipes is 8 fluid ounces.
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