Converters
Ounces to Cups Converter
Convert fluid ounces to US cups instantly for cooking, baking, and recipe measurements.
Enter a value above to see the conversion.
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Fluid Ounces to Cups Formula
Divide fluid ounces by 8 to convert to US cups.
Cups = fl oz ÷ 8
Example: 16 fl oz ÷ 8 = 2 cups
About the Ounces to Cups Conversion
The fluid ounce and cup are both US customary volume units used extensively in cooking and baking. One US cup equals exactly 8 US fluid ounces — a fixed relationship that makes scaling recipes straightforward.
Note that UK and metric cups differ slightly from US cups. One US cup is approximately 237 mL, one metric cup is 250 mL, and one UK imperial cup is about 284 mL. This converter uses the US standard, which is by far the most common in online recipes and US cookbooks.
Frequently asked questions
How many fluid ounces are in a cup?
One US cup equals exactly 8 US fluid ounces. This is the standard US customary measurement used in cooking and baking recipes. To convert fluid ounces to cups, divide the number of fluid ounces by 8. For example, 16 fl oz ÷ 8 = 2 cups.
How do I convert fluid ounces to cups?
Divide the number of fluid ounces by 8 to convert to US cups. The formula is: Cups = fl oz ÷ 8. For example, 4 fl oz ÷ 8 = 0.5 cups (half a cup), and 24 fl oz ÷ 8 = 3 cups. This is the standard US measurement used in cooking and baking.
How many cups is 32 fluid ounces?
32 fluid ounces equals exactly 4 cups (32 ÷ 8 = 4). This is equivalent to one quart or approximately 946 milliliters. A standard large water bottle is 32 fl oz, which is why many hydration guidelines express daily water goals in terms of how many of these bottles to drink.
How many cups is 16 fluid ounces?
16 fluid ounces equals exactly 2 cups (16 ÷ 8 = 2). This is equivalent to one US pint. Many beverage containers, including pint glasses, standard yogurt containers, and some soup cans, are sized to hold 16 fl oz or 2 cups.
Is a fluid ounce the same as a weight ounce?
No. A fluid ounce measures volume, while a weight ounce (avoirdupois ounce) measures mass. They are only numerically equal for water at standard temperature (one fluid ounce of water weighs approximately one weight ounce). For other liquids like oil or honey, the weight will differ because they have different densities than water.