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Oz to ml conversion

Simple Oz to mL Calculator & Conversion Table

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.

OzU.S. Standard CupsMillilitres
1 fl oz.0.12529.574 mL
2 fl oz1/4 cup59.147 mL
3 fl oz0.37588.721 mL
4 fl oz1/2 cup118.29 mL
5 fl oz0.625147.87 mL
6 fl oz3/4 cup177.44 mL
7 fl oz0.875207.01 mL
8 fl oz1 cup236.59 mL
9 fl oz1.13266.16 mL
10 fl oz1.25295.74 mL
12 fl oz1 1/2 cups354.88 mL
14 fl oz1.75414.03 mL
16 fl oz2 cups473.18 mL
18 fl oz2.25532.32 mL
1.25 pints2 1/2 cups591.47 mL
1.75 pints3.5828.06 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

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.