GramToCup is a free online calculator that converts cooking measurements between grams and cups, built for home bakers who want an ingredient-specific answer instead of one generic ratio for everything.
GramToCup converts weight (grams) to volume (cups) — and back — for 47+ common cooking and baking ingredients, from all-purpose flour and brown sugar to butter, honey, and rolled oats. Instead of using one fixed "1 cup = X grams" ratio for everything, the calculator applies each ingredient's own density, so a cup of flour and a cup of honey convert differently — the way they actually behave in a kitchen.
GramToCup is built for home cooks and bakers, recipe readers converting between US and metric measurements, and anyone who needs a quick, reliable gram-to-cup or cup-to-gram conversion without doing the math by hand.
The calculator itself is free to use, requires no account, and runs entirely in your browser. Beyond it, the site includes a dedicated page for every ingredient with its density, a quick-reference conversion table, and measuring tips; category pages that group related ingredients; printable-style conversion charts; and guides that explain the measurement concepts behind the numbers — so there's somewhere to go whether you need one quick answer or want to understand why it's the answer.
GramToCup converts between grams and cups using ingredient-specific density rather than a single fixed conversion ratio. This allows the calculator to account for the fact that different ingredients have different weights per cup.
For a detailed explanation of our conversion methodology and measurement conventions, see our Editorial Guidelines.
GramToCup's conversions are practical estimates built for everyday cooking and baking, not laboratory-exact measurements — actual weight can still vary with brand, humidity, and how an ingredient is packed into the cup. We aim for consistent, sensible figures across every ingredient on the site rather than one-off numbers, and we're upfront that they're estimates. See our Editorial Guidelines for how that data is put together and kept up to date.
There's no account to create and no personal information required to use the calculator — it runs entirely in your browser, and nothing you enter is sent to our servers. For the full details on how the site handles data, see our Privacy Policy, and for the terms covering how the calculator may be used, see our Terms of Service.
Density, conversion tables, and measuring tips for 47+ ingredients.
Ingredients grouped into 9 categories, from flours to fruits & vegetables.
Plain-language explanations of the measurement concepts behind every conversion.
Quick-reference gram-to-cup and cup-to-gram tables you can scan at a glance.
Have a question, found something that looks wrong, or want to suggest an ingredient we don't have yet? Contact us or email us directly at contact@gramtocup.com — we read every message.