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Oz to Cups

Convert Fluid Ounces to Cups

"Oz to Cups" Calculator

Convert

fl oz to Cups

How to Convert Fluid Ounces to Cups

Fluid Ounces to Cups Conversion Formula

To convert US fluid ounces to cups, use this simple formula:

cups = fluid ounces ÷ 8

One US customary cup is defined as exactly 8 US fluid ounces. Note this is the fluid ounce of volume, not the ounce of weight (28.35 g) — for dry ingredients the weight of a cup depends on the ingredient, so this converter is for liquid volume only.

Step-by-Step Volume Conversion Guide

  1. Take your volume in US fluid ounces
  2. Divide it by 8 (the number of fluid ounces in one US cup)
  3. Get your result in cups

Common Fluid Ounces to Cups Conversions

Practical Applications of Oz to Cups Converter

  • Cooking: Turning a liquid measured in fluid ounces into cups for a recipe
  • Beverages: A 16 fl oz drink is exactly 2 cups; a 32 fl oz bottle is 4 cups
  • Baking: Reading US liquid measures marked in fluid ounces on the side of a jug
  • Meal prep: Batch-portioning stock, broth or milk by the cup
  • Nutrition: Converting serving sizes on drink labels from fl oz to cups
  • Bartending: Scaling punch and cocktail batches measured in fluid ounces

History and Origin of the Cup and Fluid Ounce

The fluid ounce is a customary unit of volume; the United States defines the US fluid ounce as exactly 29.5735 ml (1/128 of a US gallon). The cup as a cooking measure was standardized in the US so that 1 cup equals 8 US fluid ounces. Beware the ambiguity: the US customary cup is 8 fl oz (about 236.6 ml), the US "legal" cup used on nutrition labels is 240 ml, and the metric cup used in Australia and parts of Europe is 250 ml. This converter uses the US customary cup of 8 fluid ounces.

Quick Conversion Tips

The math is easy because 1 cup = 8 fl oz. To convert fluid ounces to cups in your head, divide by 8: 16 fl oz ÷ 8 = 2 cups, and 4 fl oz ÷ 8 = ½ cup. Remember the milestones: 8 fl oz = 1 cup, 16 fl oz = 2 cups, and 32 fl oz = 4 cups.

See Also

Last Results

99 oz to cups - 99 fl oz = 12.38 cups
39 oz to cups - 39 fl oz = 4.88 cups
51 oz to cups - 51 fl oz = 6.38 cups
160 oz to cups - 160 fl oz = 20 cups
20.5 oz to cups - 20.5 fl oz = 2.56 cups
176 oz to cups - 176 fl oz = 22 cups
232 oz to cups - 232 fl oz = 29 cups
43 oz to cups - 43 fl oz = 5.38 cups
91 oz to cups - 91 fl oz = 11.38 cups
107 oz to cups - 107 fl oz = 13.38 cups
22 oz to cups - 22 fl oz = 2.75 cups
15.5 oz to cups - 15.5 fl oz = 1.94 cups
65 oz to cups - 65 fl oz = 8.13 cups
103 oz to cups - 103 fl oz = 12.88 cups
86 oz to cups - 86 fl oz = 10.75 cups
45 oz to cups - 45 fl oz = 5.63 cups
248 oz to cups - 248 fl oz = 31 cups
25 oz to cups - 25 fl oz = 3.13 cups
113 oz to cups - 113 fl oz = 14.13 cups
36 oz to cups - 36 fl oz = 4.5 cups
32 oz to cups - 32 fl oz = 4 cups
87 oz to cups - 87 fl oz = 10.88 cups
27.5 oz to cups - 27.5 fl oz = 3.44 cups
57 oz to cups - 57 fl oz = 7.13 cups
128 oz to cups - 128 fl oz = 16 cups
9 oz to cups - 9 fl oz = 1.13 cups
192 oz to cups - 192 fl oz = 24 cups
144 oz to cups - 144 fl oz = 18 cups
25.5 oz to cups - 25.5 fl oz = 3.19 cups
81 oz to cups - 81 fl oz = 10.13 cups
63 oz to cups - 63 fl oz = 7.88 cups
6.5 oz to cups - 6.5 fl oz = 0.81 cups
3 oz to cups - 3 fl oz = 0.38 cups
49 oz to cups - 49 fl oz = 6.13 cups
47 oz to cups - 47 fl oz = 5.88 cups
120 oz to cups - 120 fl oz = 15 cups
42 oz to cups - 42 fl oz = 5.25 cups
152 oz to cups - 152 fl oz = 19 cups
19.5 oz to cups - 19.5 fl oz = 2.44 cups
40 oz to cups - 40 fl oz = 5 cups
200 oz to cups - 200 fl oz = 25 cups
71 oz to cups - 71 fl oz = 8.88 cups
116 oz to cups - 116 fl oz = 14.5 cups
105 oz to cups - 105 fl oz = 13.13 cups
115 oz to cups - 115 fl oz = 14.38 cups
23.5 oz to cups - 23.5 fl oz = 2.94 cups
124 oz to cups - 124 fl oz = 15.5 cups
10.5 oz to cups - 10.5 fl oz = 1.31 cups
108 oz to cups - 108 fl oz = 13.5 cups
122 oz to cups - 122 fl oz = 15.25 cups
41 oz to cups - 41 fl oz = 5.13 cups
88 oz to cups - 88 fl oz = 11 cups
29 oz to cups - 29 fl oz = 3.63 cups
104 oz to cups - 104 fl oz = 13 cups
2.5 oz to cups - 2.5 fl oz = 0.31 cups
26.5 oz to cups - 26.5 fl oz = 3.31 cups

FAQ

How many fluid ounces are in one US cup?

One US customary cup holds exactly 8 US fluid ounces (1 cup = 8 fl oz), so to convert fluid ounces to cups you divide by 8.

What is the formula to convert fluid ounces to cups?

To convert US fluid ounces to cups, divide the fluid ounce value by 8. For example, 32 fl oz ÷ 8 = 4 cups.

Is this the fluid ounce of volume or the weight ounce?

This converter uses the US fluid ounce, a unit of volume. It is not the weight ounce (28.35 g) used for dry ingredients — for those, weight matters and a cup is not a fixed number of weight ounces.

Is a US cup the same as a metric cup?

No. The US customary cup is 8 US fl oz (about 236.6 ml), the US "legal" cup on nutrition labels is 240 ml, and the metric cup used in Australia is 250 ml. This tool uses the US customary cup of 8 fluid ounces.