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 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.
Oz to Cups Calculator & Converter
You can also use this calculator below to convert oz to cups:
Oz to Cups Converter
General FAQ
Is 1 oz the same as 30ml?
Yes, it is a very close approximation. You can use 1 fl. oz. = 30 mL to convert.
How many ounces in a cup?
Eight ounces is equal to one cup.
