Cups to grams converter
Tell us how many cups and of what, and we give you the weight.
Your inputs
Your inputs are processed on your device and are not sent to a server.
Example loaded. You can change any value.
There is no figure yet: nothing is calculated until you ask for it.
- Enter your measurements.
- Check the units and the assumptions.
- Press Calculate, or load the example.
Rather see a worked case? Press “Load example” and change any value afterwards.
Next step
The other direction, for when the recipe gives weight and your tool is a cup.
Where each number comes from Conversion constants are exact; densities and coverage rates come from cited sources; everything else is an assumption you can change. Methodology · Sources and updates
How to use it
- Type how many cups the recipe calls for. Decimals like 1.5 work fine.
- Pick the ingredient.
- Check the cup standard if the recipe specifies one.
- The result gives grams, kilos, ounces and pounds.
How it is calculated
The reverse of the previous tool, and the most useful one when you are following an American recipe with a European scale:
The recipe says 2 cups of flour. With a US cup that is 473 ml, which at 0.507 g/ml is 240 g. Had you used a 250 ml metric cup you would get 254 g: fourteen grams, which a cake will forgive and a bread dough will not.
The result also shows the grams per cup for the chosen ingredient, which is the number worth writing on the recipe if you plan to make it again.
Worked example
A recipe calls for 2 cups of granulated sugar:
- Volume: 2 x 236.6 = 473 ml
- Sugar density: 0.837 g/ml
- Weight: 473 x 0.837 = 396 g
Two cups of flour in the same recipe would be 240 g. Measuring both with the same cup and assuming the same weight is the most expensive mistake in home baking.
Good to know
- Three different cups. The US cup is 236.6 ml, the US legal cup 240 ml and the metric cup 250 ml. That is a 6 % spread between the first and the last.
- How you fill the cup matters. Scooping straight from the flour bag compacts it and can add 15 % to the weight compared with spooning it in.
- The figures are sourced. Solids come from the King Arthur Baking weight chart; liquids from their physical density. It is all in the ingredient table.
Frequently asked questions
How many grams in a cup of flour?
120 g with a 236.6 ml US cup, and 127 g with a 250 ml metric cup. That is the reference figure for all-purpose flour spooned in and levelled.
How many grams in a cup of sugar?
198 g of granulated white sugar in a US cup. Confectioners' sugar weighs far less at 113 g, and packed brown sugar more at 213 g.
What about a cup of butter?
226 g, which is exactly two US sticks. American recipes measure butter in sticks precisely because of this.
Can I enter 1.5 cups?
Yes, and 1,5 works too. Both decimal separators are accepted, as is 0.75 for three quarters.
The recipe does not say which cup it uses
If the recipe is American, it is almost certainly the 236.6 ml US cup. Australian recipes use the 250 ml metric cup.