Ounces to Cups Calculator
Enter a value in fluid ounces (fl oz) to convert to cups.
Cups to Ounces Calculator
Enter a value in cups to convert to fluid ounces (fl oz).
Liquid Volume Converter
Convert between fluid ounces, cups, pints, quarts, and gallons.
oz to cups Conversion Table
| Fluid Ounces (fl oz) | Cups | Fraction |
|---|
How to Convert oz to Cups
In the US customary system, 1 cup = 8 fluid ounces (fl oz). To convert fluid ounces to cups, divide the number of fluid ounces by 8.
For example, 12 fl oz divided by 8 equals 1.5 cups (1 and a half cups).
How to Convert Cups to oz
To go the other direction, multiply the number of cups by 8.
For example, 2.5 cups multiplied by 8 equals 20 fl oz.
Fluid Ounces vs. Weight Ounces
It is important to note that fluid ounces (fl oz) measure volume, not weight. A fluid ounce of water weighs approximately one ounce by weight, but this relationship does not hold for other liquids. Milk, oil, and juice all have different densities. The conversion on this page applies to fluid ounces only.
Common Measurement Reference
1 pint = 2 cups = 16 fl oz
1 quart = 4 cups = 32 fl oz
1 gallon = 16 cups = 128 fl oz