About Cups to Grams

American recipes measure by the cup; most of the world bakes by weight. A cup of flour and a cup of sugar weigh very different amounts, so this site uses a measured weight for each ingredient instead of one rough number.

How we keep it accurate

Every number that comes from a law, a standard or a dataset links to the original source on the page where it is used. The math is shown next to each result so you can check it yourself. If you spot a mistake, the result shown on your screen is still yours to verify; we fix errors as soon as we find them.

Where the numbers come from

Cup, tablespoon and stick weights come from USDA FoodData Central, the US Department of Agriculture’s food database, which lists measured household portions for each food. We only include an ingredient when USDA lists a cup or tablespoon weight for it. Unit definitions (1 cup = 16 tablespoons = 48 teaspoons, the ounce, and the °F to °C formula) come from USDA ARS and NIST. Each page links to the exact record it uses.

Free to use

The tools are free and need no sign-up. Ads from Google AdSense pay for keeping the site online. See the privacy policy for what that means.