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Cups and Ounces (oz) Converter

Please choose a cooking ingredient. A density is required for converting between cups and dry ounces (a cup of sugar weighs less than a cup of water). If your ingredient is not on the list, click 'add own'.

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Use this calculator tool to convert between cups and ounces (dry or fluid). If converting cups and dry ounces (oz), you will need to choose an ingredient or enter a density figure.

Disclaimer: Whilst every effort has been made in building this calculator, we are not to be held liable for any damages or monetary losses arising out of or in connection with the use of it. This tool is here purely as a service to you, please use it at your own risk. Full disclaimer. Do not use calculations for anything where loss of life, money, property, etc could result from inaccurate calculations.

How many ounces are in a cup?

In the United States, one cup holds 8 fluid ounces. In the UK, one cup holds 10 UK fluid ounces.

Cups to ounces (US recipes)

  • 1 US cup (236.6mL) = 8 US fluid ounces
  • 1 US cup (236.6mL) = 8.327 UK fluid ounces

Cups to ounces (UK recipes)

  • 1 UK cup (284.1mL) = 10 UK fluid ounces
  • 1 UK cup (284.1mL) = 9.607 US fluid ounces

Rest of world recipes

  • 1 metric cup (250mL) = 8.454 US fluid ounces
  • 1 metric cup (250mL) = 8.799 UK fluid ounces

The reference charts below feature conversions between cups and fluid ounces (fl oz). If you're wanting weight conversions for dry ounces instead, you'll find a chart and information further down the page.

US cups to ounces chart

Cups (US) Ounces (fluid) Tablespoons (US)
1 cup 8 fl oz 16 tbsp
3/4 cup 6 fl oz 12 tbsp
2/3 cup 5.3 fl oz 10.6 tbsp
1/2 cup 4 fl oz 8 tbsp
1/3 cup 2.7 fl oz 5.3 tbsp
1/4 cup 2 fl oz 4 tbsp

UK cups to ounces chart

Cups (Imperial) Ounces (fluid) Tablespoons (UK)
1 cup 10 fl oz 16 tbsp
3/4 cup 7.5 fl oz 12 tbsp
2/3 cup 6.7 fl oz 10.6 tbsp
1/2 cup 5 fl oz 8 tbsp
1/3 cup 3.3 fl oz 5.3 tbsp
1/4 cup 2.5 fl oz 4 tbsp

Cups to ounces infographic

The infographic below shows measurements for US cups to ounces, tablespoons, teaspoons and milliliters. Note that all figures are rounded to the nearest whole number.

Cups to ounces, tablespoons and teaspoons chart

Cups to dry ounces (oz)

If you want to convert between cups and dry ounces (oz), it's important to note that the cup is a unit of volume and the dry ounce (oz) is a unit of weight. This means that making a conversion requires an extra factor - a substance density figure. As a very crude example, a cup full of sugar will weigh less than a cup full of olive oil because olive oil is a denser substance.

I've given a list of ingredients to choose from. However, please be aware that these are approximations - different brands of ingredients will vary to a small extent. This means that the results you receive will be estimations. The ingredient densities were sourced from the Food and Agricultural Organisation of the United Nations as well as other sources. A full list of these is available on the baking ingredient conversions page.

Ingredient 1 Cup
(US)
1/2 Cup
(US)
1/3 Cup
(US)
Flour (plain)
(529g/L)
4.41 oz 2.21 oz 1.47 oz
Flour (self-raising)
(529g/L)
4.41 oz 2.21 oz 1.47 oz
Flour (bread)
(550g/L)
4.48 oz 2.24 oz 2.21 oz
Butter
(959g/L)
8 oz 4 oz 2.67 oz
Honey
(1420g/L)
11.85 oz 5.93 oz 3.95 oz
Margarine
(973g/L)
8.1 oz 4.05 oz 2.7 oz
Milk
(1035g/L)
8.64 oz 4.32 oz 2.88 oz
Oats
(432g/L)
3.6 oz 1.8 oz 1.2 oz
Sugar (granulated)
(849g/L)
7.09 oz 3.55 oz 2.36 oz
Sugar (brown)
(850g/L)
7.05 oz 3.53 oz 2.35 oz
Sugar (caster)
(801g/L)
6.68 oz 3.34 oz 2.23 oz
Sugar (icing)
(561g/L)
4.68 oz 2.34 oz 1.56 oz

Converting between other cooking units

To convert between other cooking units such as grams, pounds, quarts, tablespoons, teaspoons, litres and more, give the cooking converter a try. You can also convert directly between cups and grams, cups and mL and ounces and mL.