Cooking conversions, done right
Accurate cooking conversions, ingredient by ingredient
Generic converters assume every ingredient has the density of water. That gives the wrong answer for flour, brown sugar, butter, honey, and most things you actually cook with. KitchenMath uses ingredient-specific densities sourced from King Arthur, USDA, and other authoritative references.
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125 g
Why ingredient density matters
One US cup of water weighs 240 grams. One US cup of all-purpose flour weighs 125 grams. One US cup of honey weighs 339 grams. The same volume of three different liquids and powders ranges across nearly a three-fold spread in weight, because each ingredient has its own density.
Using a generic converter that assumes water density introduces errors of 25 to 60 percent on common baking ingredients. KitchenMath sources every density value from a verifiable primary reference, cites it on the page, and shows the variance when sources disagree.