Cups to Grams Converter

grams weighing scales icon

Use this calculator tool to convert between cups and grams. Note that because the cup is a unit of volume and gram is a unit of weight, you will need to choose an ingredient from the drop-down list or enter a density figure. If you're unsure which cup option to choose, see the explanation here.

Please select a cooking ingredient. A density is required for converting between cups and grams (a cup of flour weighs less than a cup of water). If your ingredient is not on the list, or you wish to enter your own ingredient density figure, click 'add own'.

  add own
Group digits?

Processing calculations...


Whilst every effort has been made in building this cups and grams converter, we are not to be held liable for any special, incidental, indirect or consequential damages or monetary losses of any kind arising out of or in connection with the use of the converter tools and information derived from the web site. This cups and grams converter is here purely as a service to you, please use it at your own risk. Do not use calculations for anything where loss of life, money, property, etc could result from inaccurate conversions.

Please see the full disclaimer for more information.

Converting Between Cups And Grams

Due to the fact that the cup is a unit of volume and the gram is a unit of weight, converting between the two requires a substance density figure to be included. To give a crude example, a cup full of flour will weigh less than a cup full of water. Although I do include a list of ingredient options to choose from, you should be aware that these are approximations and so the result you receive will be an estimate. The ingredient densities were sourced from a database provided by the Food and Agricultural Organisation of the United Nations as well as other information sources.

Which Cup Should I Use?

As you'll have noticed from the list of conversion options above, there are multiple options for the humble cup. If you need some clarification as to which cup is used in your recipe, you'll find them listed below. In addition, I've also written a dedicated article, how many grams are in a cup?

The US Customary Cup

The US customary cup (referenced in recipes in the US) measures 236.588 mL. This one is referenced as Cups (US) in the options list. There is a US legal cup, which is referenced by the FDA for nutrition and measures 240mL. However, I haven't included this on the options list to avoid confusion.

The Metric Cup

The metric cup is used (occasionally) in the UK as well as Australia, New Zealand, Canada and the rest of the Commonwealth. It measures 250mL. In the UK, cups have rarely been used in recipes since the 1960s. If you are following an old UK recipe, it'll likely be referencing the imperial cup...

The metric cup
The metric cup (250mL) and other associated measuring cups (1/2 cup, 1/4 cup, etc)

The Imperial Cup

You may find the UK imperial cup referenced in pre-1970 recipes. If you're using a recipe like this, select the Cups (Imperial, UK) option in the calculator. The imperial cup measures 284.131 mL.

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 quarts and cups here.

If you have any suggestions for this cups to grams converter, or have any additional density figures that you wish to be included, please contact me.