Cup & Gram

1/2 Cup of Cocoa Powder in Grams

1/2 cup of cocoa powder weighs 42 grams (about 1.5 oz), based on 84 g per US cup (spoon-and-level method). That's the same as 8 tablespoons of cocoa powder. When a recipe's outcome depends on accuracy — especially baking — weigh it instead of measuring by cup.

1/2 cup is the measure most kitchens reach for first. Double it for a full cup (84 g), halve it for 1/4 cup (21 g) — both are standard scoops, which is why recipes lean on this one.

How much is 1/2 cup of cocoa powder?

1/2 cup of cocoa powder in every unit
Grams42 g
Ounces (weight)1.5 oz
Tablespoons8 tbsp
Teaspoons24 tsp
Density used84 g per US cup

No 1/2 cup measure? Use spoons

1/2 cup is exactly 8 tablespoons, which is 42 g of cocoa powder. Measuring spoons are stamped to a tighter tolerance than cups, so for small amounts the spoon route is usually the more accurate one even when you do own the cup.

Halving and doubling 1/2 cup

Scaling a recipe is the usual reason this conversion comes up, and grams scale cleanly where cup fractions do not:

Scaling 1/2 cup of cocoa powder
RecipeCupsGramsSpoons
Half ¼ cup 21 g 4 tablespoons
As written ½ cup 42 g 8 tablespoons
Double 1 cup 84 g 16 tablespoons

Nearby amounts

Cups of cocoa powder to grams (84 g per cup)
CupsGramsOunces
¼ cups 21 g 0.7 oz
⅓ cups 28 g 1 oz
½ cups 42 g 1.5 oz
⅔ cups 56 g 2 oz
¾ cups 63 g 2.2 oz

Every cup fraction of cocoa powder in grams — the full chart.

How to measure 1/2 cup of cocoa powder

Cocoa powder clumps and compresses easily, so spoon it into the cup and level — never pack it. A level spooned cup is 84 g. If a recipe says "sifted cocoa," sift after measuring unless it says otherwise.

1/2 cup of other ingredients

Convert another amount

250 cups Cocoa powder (unsweetened) = 21000 g

Based on 84 g per US cup.

Reverse conversion: grams of cocoa powder to cups.

Density 84 g/cup — sources: King Arthur Baking ingredient weight chart, USDA FoodData Central. Data verified 2026-08-20. Methodology.