Cup to Fluid Ounce Converter
Quickly and accurately convert volume measurements from cups to fluid ounces with our free online Cup to Fluid Ounce Converter. Perfect for cooking, baking, and recipe conversions.
Common Conversions
| US Cups | US Fluid Ounces (fl oz) |
|---|---|
| 0.125 cup (1/8 cup) | 1 fl oz |
| 0.25 cup (1/4 cup) | 2 fl oz |
| 0.5 cup (1/2 cup) | 4 fl oz |
| 0.75 cup (3/4 cup) | 6 fl oz |
| 1 cup | 8 fl oz |
| 1.5 cups | 12 fl oz |
| 2 cups (1 pint) | 16 fl oz |
| 4 cups (1 quart) | 32 fl oz |
How It Works
Converting from cups to fluid ounces is a common volume conversion, especially in cooking and baking when following recipes from different regions or scaling recipes up or down.
Conversion Formula:
1 US cup = 8 US fluid ounces
To convert US cups to US fluid ounces, multiply the cup value by 8:
US Fluid Ounces = US Cups × 8
Example Calculation:
To convert 1.5 US cups to US fluid ounces:
US Fluid Ounces = 1.5 cups × 8 = 12 fl oz
Our converter handles this calculation automatically and provides results with up to 9 decimal places for precision. It also formats the result to remove unnecessary trailing zeros for better readability.
US Customary Volume Measurement Hierarchy:
- 1 gallon = 4 quarts
- 1 quart = 2 pints
- 1 pint = 2 cups
- 1 cup = 8 fluid ounces
- 1 fluid ounce = 2 tablespoons
- 1 tablespoon = 3 teaspoons
Frequently Asked Questions
What is a US cup?
A US cup is a unit of volume in the US customary system, equal to 8 US fluid ounces or approximately 236.588 milliliters. It’s widely used in cooking and baking, especially in the United States and Canada, for measuring ingredients in recipes.
What is a US fluid ounce?
A US fluid ounce (fl oz) is a unit of volume in the US customary system, equal to approximately 29.5735 milliliters. It’s widely used in the United States for measuring liquids, especially in cooking, beverages, and for packaging certain products.
What’s the difference between US and UK cups and fluid ounces?
The US cup (236.588 mL) is different from the UK cup (284.131 mL). Similarly, the US fluid ounce (29.5735 mL) is different from the UK (imperial) fluid ounce (28.4131 mL). This converter uses US measurements, which are standard in the United States.
Why would I need to convert cups to fluid ounces?
This conversion is commonly needed when following recipes that use different units of measurement, scaling recipes up or down, or when you have measuring tools in one unit but need to measure in another. For example, if a recipe calls for 1 cup of liquid but your measuring tools are marked in fluid ounces.
How accurate is this converter?
Our converter uses the standard conversion factor of 8 fluid ounces per cup, which is exact in the US customary system. The calculator can display results with up to 9 decimal places for high precision needs, though for this particular conversion, decimal places are rarely needed since the conversion is a simple multiplication by 8.
How do I convert fluid ounces back to cups?
To convert from US fluid ounces to US cups, divide the fluid ounce value by 8 (or multiply by 0.125). Alternatively, you can use our Fluid Ounce to Cup Converter for quick and accurate conversions.