Most American or United States recipes use fluid ounces (oz) to measure liquids for cooking. Below is a handy table and chart to calculate how many ounces are in a cup? You can also use the table to convert from oz to ml or from imperial to metric.
Oz to Cups Calculator & Converter
You can also use this calculator below to convert oz to cups:
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Oz to mL to Cup Conversion Table
It’s important to note that the table below uses the US customary cup when converting from ounces to ml.
| Oz | U.S. Standard Cups | Millilitres |
|---|---|---|
| 1 fl oz. | 0.125 | 29.574 mL |
| 2 fl oz | 1/4 cup | 59.147 mL |
| 3 fl oz | 0.375 | 88.721 mL |
| 4 fl oz | 1/2 cup | 118.29 mL |
| 5 fl oz | 0.625 | 147.87 mL |
| 6 fl oz | 3/4 cup | 177.44 mL |
| 7 fl oz | 0.875 | 207.01 mL |
| 8 fl oz | 1 cup | 236.59 mL |
| 9 fl oz | 1.13 | 266.16 mL |
| 10 fl oz | 1.25 | 295.74 mL |
| 12 fl oz | 1 1/2 cups | 354.88 mL |
| 14 fl oz | 1.75 | 414.03 mL |
| 16 fl oz | 2 cups | 473.18 mL |
| 18 fl oz | 2.25 | 532.32 mL |
| 1.25 pints | 2 1/2 cups | 591.47 mL |
| 1.75 pints | 3.5 | 828.06 mL |
Different Cup (unit) Sizes in the US
In the United States, there are two main cup volumes used:
- Customary Cup – half of a liquid pint (236 mL) and is the traditional measure.
- Legal Cup – used in the United States for nutrition labelling and defined in United States law as 240 ml.
A cup of coffee in the US on the other hand is usually 4 fluid ounces (118 mL), which is brewed using 5 fluid ounces (148 mL) of water.
General FAQ
Yes, it is a very close approximation. You can use 1 fl. oz. = 30 mL to convert.
Eight ounces is equal to one cup.
