Cups to Grams Converter
Convert a recipe’s cup measures to weights, ingredient by ingredient.
Ingredients
In weights
About the Cups to Grams converter
There is no single answer to "how many grams in a cup", because it depends entirely on what is in the cup. A cup of flour is about 120 g. A cup of honey is nearly three times that.
Paste a whole ingredient list and get each line back as a weight, worked out from what that ingredient actually is.
Why a generic converter gets this wrong
A cup is a measure of volume and a gram is a measure of mass, so converting between them needs the density of the thing being measured. Flour is light and full of air; honey is dense and heavy.
Using one figure for everything is the reason so many converted recipes fail. This looks up each ingredient by name and uses its own density — including the British and American names for the same thing, so "plain flour" and "all-purpose flour" both work.
A cup is not the same everywhere
A US cup is 236 ml. A metric cup, used in the UK, Europe and Canada, is 250 ml — about 6% more. Choosing the wrong one skews everything by roughly that much.
The Australian tablespoon is the sharper trap: it holds 20 ml against everyone else’s 15, which is four teaspoons rather than three. A recipe calling for three tablespoons of a strong ingredient goes badly wrong across that gap.
Weighing beats measuring
Flour is the worst offender for inconsistency. Scooping the cup straight into the bag compacts it and can pick up 20% more than spooning it in gently — enough to turn a cake dry.
That variation is exactly why professional recipes give weights. A set of digital scales removes the guesswork entirely, and makes recipes repeatable.
Frequently asked questions
It says my ingredient was not recognised.
The table covers common baking and cooking ingredients. Anything unusual has no density listed, so that line is left as it was rather than converted with a wrong number. Everything else in the list still converts.
How much is a stick of butter?
Half a US cup, which is 113 g or 4 oz. A full cup of butter is 227 g, so two sticks.
What about kosher or flaky salt?
Those weigh roughly half what table salt does for the same volume, and brands differ from each other too. Salt is the one place where measuring by spoon is often more reliable than converting.
How accurate are these weights?
Close enough for cooking, and far better than measuring by volume. The densities are standard published figures, but real ingredients vary — flour especially, depending on humidity and how compacted the bag is. For bread and pastry, where the ratio matters, weigh rather than convert.
Do I need an account?
No, and there is nothing to sign up for. The conversion happens in your browser, so it also works with the wifi off — handy when the kitchen has bad signal.