One cup of cocoa powder weighs 84 g, spooned and levelled, according to King Arthur Baking. Cocoa powder is the lightest baking ingredient by the cup after oat flour — a cup weighs barely more than two-thirds of a cup of flour — because it is an extremely fine, fluffy powder that traps a lot of air. That lightness is deceptive: cocoa is intensely flavoured, and a cup of it is enough to make a large chocolate cake. The figure matters for chocolate cakes, brownies and hot chocolate, where cocoa is measured by the cup and the weight decides the intensity. All weights on this page are approximate; natural and Dutch-processed cocoa weigh the same per cup, so verify with a scale when precision matters.
Cocoa Powder: weight and measurement table
The table below gives the weight of cocoa powder in every measure you will use, from a teaspoon up to 2 cups, all derived from the King Arthur Baking figure of 84 g per cup, spooned and levelled. Every figure is approximate — spooned and levelled is a technique, not a machine setting — so when the recipe matters, weigh the ingredient on a kitchen scale instead.
| Amount | Weight (approx.) |
| --- | --- |
| 1 teaspoon | 1.8 g |
| 1 tablespoon | 5.2 g |
| 1/4 cup (4 tbsp) | 21 g |
| 1/3 cup | 28 g |
| 1/2 cup (8 tbsp) | 42 g |
| 3/4 cup (12 tbsp) | 63 g |
| 1 cup (16 tbsp) | 84 g |
| 2 cups | 168 g |
| 100 g | 1.2 cups |
There are 3 teaspoons in a tablespoon and 16 tablespoons in a cup, so you can move between any of these measures by multiplying or dividing. If a recipe calls for 100 g and you only have measuring cups, that is about 1.2 cups. Keep the cups to grams converter open while you cook and you will never need to do the arithmetic in your head.
What is Cocoa Powder?
Cocoa powder is unsweetened cocoa powder; natural cocoa is acidic, Dutch-processed is alkalised. It is made by pressing cocoa butter out of chocolate liquor, then grinding the remaining cocoa solids into a fine powder. Natural cocoa is acidic, with a pH of about 5, and it reacts with baking soda to give lift — that is why natural cocoa recipes use baking soda. Dutch-processed cocoa is treated with an alkali to neutralise its acidity, giving it a darker colour and a smoother, less bitter flavour, and it needs baking powder rather than soda, because there is no acid left to activate the soda. Both weigh 84 g per cup, and both are used for chocolate cakes, brownies, hot chocolate and dusting. The difference matters: swapping them without adjusting the leavening gives a cake that is either flat or soapy. Cocoa powder keeps for up to 2 years in an airtight container in a cool, dark place.
How to measure Cocoa Powder correctly
Cocoa Powder is measured spooned and levelled, and the method matters more than most cooks realise. For dry ingredients, spoon the ingredient into the measure with a smaller spoon, letting it fall loosely, then sweep a knife across the top to level it — never dip the measuring cup into the bag, because dipping compresses the ingredient and adds up to 20 percent. For liquids, pour into a liquid measuring jug and read the level at eye height, or weigh directly into the bowl, which is the most accurate method of all. The King Arthur Baking figure used on this page is 84 g per cup, and it is the figure the site's converters use, so the numbers here and the numbers in the tool always agree. Confidence in this figure is high.
Worked examples
A devil's food cake
A devil's food cake uses 1 cup of cocoa powder — 84 g — with 2 cups of flour and 2 cups of sugar. The weight matters because cocoa is doing two jobs: it flavours the cake and it dries it out, because cocoa absorbs liquid. Weighing 84 g keeps the ratio exact — a cup too much and the cake is dry and bitter, a cup too little and it tastes like a plain sponge with a hint of chocolate. The recipe uses natural cocoa with baking soda, because the cocoa's acidity activates the soda, and the cake is baked in two 20 cm tins for 30 minutes. The cocoa is sifted with the flour to remove lumps, which is essential — cocoa clumps badly, and a lump of dry cocoa in a cake is a bitter surprise.
A batch of brownies
A brownie recipe uses 3/4 cup of cocoa powder — about 63 g — with 200 g of butter and 200 g of sugar. The weight is useful because brownies are a ratio recipe: the cocoa-to-butter ratio decides whether the brownies are fudgy or cakey. Sixty-three grams of cocoa against 200 g of butter gives a fudgy brownie with a deep chocolate flavour, while a tablespoon more cocoa makes them drier and more cake-like. The cocoa is whisked into the melted butter, which blooms it — the heat releases its flavour compounds — and the batter is baked for 25 minutes, until the edges are set and the centre still wobbles slightly.
A mug of hot chocolate
A mug of hot chocolate uses 2 tablespoons of cocoa powder — about 10.5 g — whisked with sugar and hot milk. The weight matters because hot chocolate is a balance: 10.5 g of cocoa in 250 ml of milk gives a rich, dark drink, while a tablespoon more makes it bitter and a tablespoon less makes it taste like warm milk. The cocoa is mixed with the sugar first, because cocoa does not dissolve in liquid on its own — it clumps — and the sugar separates the particles so they dissolve evenly. The milk is heated to just below boiling, and the cocoa is whisked in gradually, giving a smooth, glossy drink with no lumps.
Natural versus Dutch-processed cocoa
The difference between natural and Dutch-processed cocoa is chemistry, and it decides which leavening your recipe needs. Natural cocoa is acidic, with a pH of about 5, and it reacts with baking soda to release carbon dioxide — that is the lift in a natural cocoa cake. Dutch-processed cocoa has been treated with an alkali, which neutralises its acidity and darkens its colour, giving it a smoother, less bitter flavour and a deep, almost black appearance. But because the acid is gone, Dutch cocoa cannot activate baking soda, so Dutch cocoa recipes use baking powder instead. Swapping them without adjusting the leavening is the most common cocoa mistake: natural cocoa with baking powder gives a flat cake, because there is no acid to activate the powder's full rise; Dutch cocoa with baking soda gives a soapy cake, because the soda is left unreacted. The practical rule is to use the cocoa your recipe specifies, and if you must swap, adjust the leavening too. Both cocoas weigh 84 g per cup, so the weight does not change — only the chemistry does. And for dusting, Dutch cocoa's darker colour looks better on a cake, while natural cocoa's lighter colour suits a hot chocolate.
What to use instead
If you run out of cocoa powder, these are the tested substitutes from our substitution data, with the ratio and the case where each one does not work. Use the ratio by weight where it is given, and check the warning before you commit the batter.
Cocoa powder to Dark chocolate: 1 oz chocolate per 3 tbsp cocoa + 1 tbsp fat. Do not use chocolate chips where the recipe needs melted chocolate — the stabilisers stop them melting smoothly.
Cocoa powder to Dutch-processed cocoa: 1:1 (adjust leavening: Dutch cocoa needs baking powder, natural cocoa needs baking soda). Do not use chocolate chips where the recipe needs melted chocolate — the stabilisers stop them melting smoothly.
The golden rule for any substitution is to match the job, not just the ingredient: a substitute that works in a sauce may fail in a cake, because the two recipes ask different things of the ingredient. When in doubt, use a recipe written for the substitute rather than adapting one written for the original.
Storage
Airtight container, cool and dark, up to 2 years. That is the headline, but the details matter. Store cocoa powder in an airtight container, away from heat, light and strong smells — dry ingredients absorb odours readily, and a bag of flour stored next to the spices will taste of them within a week. Label the container with the date you opened it, so you know how long it has been there, and check it before you bake: if it smells off, tastes bitter, or shows any sign of moisture or insects, discard it. Buying in smaller quantities and using it promptly is better than buying in bulk and storing it for a year, because every ingredient loses flavour with time, even the ones that never truly go bad.
Frequently asked questions
How many grams is 1 cup of cocoa powder?
One cup of cocoa powder weighs 84 g, spooned and levelled, according to King Arthur Baking. One tablespoon weighs 5.3 g and one teaspoon weighs 1.8 g. Natural and Dutch-processed cocoa weigh the same per cup.
How many tablespoons of cocoa powder are in 100 g?
There are about 19 tablespoons in 100 g of cocoa powder (100 divided by 5.3 is 18.9). A standard 250 g tin holds about 47 tablespoons, which is roughly 3 cups.
Can I use Dutch-processed cocoa instead of natural cocoa?
Yes, 1:1 by weight, but adjust the leavening. Natural cocoa is acidic and needs baking soda; Dutch cocoa is neutralised and needs baking powder. If you swap the cocoa without swapping the leavening, the cake will be flat or soapy.
Can I use chocolate instead of cocoa powder?
Yes, with a formula. For every 3 tablespoons of cocoa, use 1 oz of unsweetened chocolate and reduce the fat in the recipe by 1 tablespoon, because chocolate contains cocoa butter. Do not use chocolate chips where the recipe needs melted chocolate — the stabilisers stop them melting smoothly.
How long does cocoa powder last?
Up to 2 years in an airtight container in a cool, dark place. Cocoa powder does not spoil quickly, but it loses flavour over time and absorbs odours. Discard it if it smells stale or dusty rather than rich and chocolatey.
Related pages
If you cook with this ingredient regularly, these pages will help: the cups to grams converter for any amount, the ingredient density lookup for the full table of 120 ingredients, the Cocoa Powder cups to grams page for cup conversions, the Cocoa Powder grams to cups page for working backwards from grams, and the Cocoa Powder tablespoons to grams page for spoon measures. You may also want Milk, Heavy Cream.