Conversion table (fluid ounces to US cups)
| Fluid ounces | Cups | |
|---|---|---|
| 1 fl oz | 0.125 | 2 tablespoons |
| 2 fl oz | 0.25 | quarter cup |
| 4 fl oz | 0.5 | half cup |
| 6 fl oz | 0.75 | three-quarter cup |
| 8 fl oz | 1 | one cup |
| 12 fl oz | 1.5 | a soda can |
| 16 fl oz | 2 | one US pint |
| 32 fl oz | 4 | one US quart |
How to convert oz to cups
- fl oz
- fluid ounces you enter
- cups
- the result in cups
- 8
- fluid ounces in one US customary cup
Dry ounces measure weight, so they do not convert to cups by a single number. A cup of flour is about 4.4 oz, a cup of sugar about 7.1 oz, and a cup of butter about 8 oz. For those, use cups to pounds, which knows each ingredient.
Cup size is not universal. This defaults to the US customary cup (8 fl oz); the metric cup is 250 mL and the imperial cup is 10 imperial fluid ounces. Use the selector to match your recipe.
Frequently asked questions
How many cups is 8 oz?
8 fluid ounces is exactly one US cup.
How many ounces are in a cup?
A US customary cup holds 8 fluid ounces of liquid.
How many cups is 16 oz?
16 fluid ounces is 2 cups, which is also a US pint.
Is a dry cup the same as a fluid cup?
The cup is the same volume, but a dry ounce is a weight, so 8 dry ounces of flour is not one cup. Weigh dry ingredients or use cups to pounds.
How many ounces is a cup of flour?
About 4.4 ounces by weight for all-purpose flour, not 8, because that is a weight rather than a fluid measure.
Is a metric cup 8 ounces?
No. The metric cup is 250 mL, a little more than the 236.6 mL US cup, so it is about 8.45 fluid ounces.
Related conversions
Scaling a recipe up? A cup is half a pint, so cups to pints, cups to quarts and cups to gallons step through the larger measures (2 cups a pint, 4 a quart, 16 a gallon). For a dry ingredient by weight, cups to pounds handles flour, sugar and the rest. Converting from millilitres? See mL to cups.