How Many Grams Are in a Cup of Cocoa Powder?
One US cup of cocoa powder weighs about 84 grams.
Why This One Is Not Exact
Every other conversion on this site is a definition: an inch is exactly 2.54 centimeters, and that never changes. This page is different. A cup measures volume and grams measure weight, and what bridges them is density — which depends on the ingredient and, far more, on how the cup was filled. The figure of 84 grams per cup is the standard reference, not a law of nature.
Cocoa powder clumps and traps air, so it is one of the ingredients where weighing makes the clearest difference to the result.
Where This Comes Up
Cocoa powder is the lightest ingredient on this chart and one of the most error-prone, because it clumps in the bag and then traps air in the cup. In a chocolate cake, getting it wrong shows up immediately in the texture.
A brownie recipe calling for 1/2 cup of cocoa powder wants about 42 grams.
What People Get Wrong
Cocoa powder compacts like flour. Scooping straight from the tin can give 100 grams instead of 84 — nearly 20 percent more, which dries out a batter and makes it bitter.
Cocoa Powder Cups to Grams Chart
| Recipe calls for | Grams | Ounces |
|---|---|---|
| 1 tablespoon | 5 | 0.19 |
| 1/8 cup | 11 | 0.37 |
| 1/4 cup | 21 | 0.74 |
| 1/3 cup | 28 | 0.99 |
| 1/2 cup | 42 | 1.48 |
| 2/3 cup | 56 | 1.98 |
| 3/4 cup | 63 | 2.22 |
| 1 cup | 84 | 2.96 |
| 1 1/2 cups | 126 | 4.44 |
| 2 cups | 168 | 5.93 |
| 3 cups | 252 | 8.89 |
| 4 cups | 336 | 11.85 |
Weights follow the King Arthur Baking ingredient weight chart, the reference most American recipes are written against. For the exact, defined conversions used elsewhere on this site, see how we calculate.
Frequently Asked Questions
Does Dutch-process cocoa weigh the same?
Close enough for a recipe. Dutch-process cocoa is treated with an alkali, which changes the flavour and colour rather than the density.
How many grams is a tablespoon of cocoa powder?
About 5 grams, since a tablespoon is one sixteenth of a cup.
Why is cocoa powder so light?
It is a very fine powder with most of the cocoa butter pressed out, so a cup is mostly air between particles.
Can I substitute cocoa powder for chocolate?
Not by weight directly. Unsweetened chocolate contains cocoa butter, so substituting needs both a cocoa and a fat adjustment.