About Grams Per Cup

Grams Per Cup is a free cooking converter built to solve one specific, everyday problem: recipes written in cups when you have a kitchen scale, or written in grams when you only have measuring cups. Because a cup measures volume and grams measure weight, there is no single conversion that works for every ingredient — so this site stores the real density of each ingredient and converts accordingly.

Why the site exists

Most conversion sites give you one generic "1 cup = 128 g" number that's wrong for almost everything. A cup of cocoa powder (about 85 g) and a cup of honey (about 340 g) are four times apart in weight. Grams Per Cup was built to give the ingredient-specific answer instead — the number that actually makes your bake come out right.

How the numbers are calculated

Every value is based on the US cup (about 236.6 ml) and standard measuring practice — flour spooned and levelled, brown sugar packed, and so on — and is checked against reference data from sources like the USDA FoodData Central database and King Arthur Baking's ingredient weight chart. We explain the full approach, including why our figures sometimes differ from other sites, on our methodology page.

Accuracy and honesty

These are practical cooking guides, not laboratory measurements. Density varies with brand, humidity, and how an ingredient is packed or sifted, so treat the numbers as reliable close estimates. When precision really matters — bread, pastry, or any recipe that's failed before — weighing on a kitchen scale is always the most reliable method, and the weights here give you the target to aim for.

Corrections

Spotted a number that looks off, or want an ingredient added? Get in touch via our contact page. Reader corrections are genuinely welcome and help keep the data trustworthy.