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 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.


Mr Scott Purcell, CFA

Scott Purcell is the Co-Founder of Man of Many and a CFA Charterholder. Scott graduated with a Bachelor of Commerce from the University of Sydney majoring in Finance and International Business. Prior to starting Man of Many, Scott spent 7 years at Westpac Institutional Bank as a Senior Financial Analyst. Scott was named as a Finalist for Publish Leader of the Year in the Mumbrella Publish Awards for 2021, as a Finalist in the NSW Business Chamber Awards for Young Entrepreneur in 2017 and brings extensive commercial and financial expertise to the media industry. Scott specialises in technology, finance, whisky and general lifestyle content.