Measuring Chocolate and Cocoa: Chips, Chunks, Powder and Bars
A cup of chocolate chips is 170 g but a cup of cocoa powder is only 85 g. Here is how to measure every form of chocolate accurately.
A cup of chocolate chips is 170 g but a cup of cocoa powder is only 85 g. Here is how to measure every form of chocolate accurately.
Chocolate comes in more forms than almost any other baking ingredient, and each one measures differently. A cup of one is twice the weight of a cup of another.
Chocolate by the cup
Cocoa powder is the outlier. It is extremely light and holds a lot of air, so a cup weighs only 85 g — less than a cup of flour, and less than half a cup of chocolate chips.
Mini chips weigh more per cup than regular ones for a straightforward reason: smaller pieces leave less empty space between them.
Cocoa powder is where measuring goes wrong
Cocoa clumps as it sits, and clumped cocoa measures very differently to loose cocoa. The recipe wording matters:
"1 cup sifted cocoa" — sift, then measure the sifted cocoa.
"1 cup cocoa, sifted" — measure, then sift.
Natural vs Dutch-process
This is the distinction that causes the most trouble, and it is chemical rather than culinary.
Natural cocoa is acidic, with a sharp, fruity, slightly bitter character and a lighter reddish-brown colour. Being acidic, it activates baking soda.
Dutch-process cocoa has been treated with an alkali to neutralise that acidity. It is darker, smoother and mellower — and it will not activate baking soda, because there is no longer any acid to react.
Bars, blocks and chopped chocolate
Bar chocolate is sold by weight, which makes it the easiest form to measure: use the printed weight and count squares.
Most bars are 100 g and scored into squares. A standard 100 g bar with 20 squares gives 5 g per square, so 60 g is twelve squares. Check your own bar — the count varies by brand.
Chopped chocolate does not measure well by volume. How coarsely you chop changes the volume enormously while the weight stays the same. If a recipe gives chopped chocolate in cups, treat it as approximate and weigh if you can.
Chips are not the same as chopped chocolate
Chocolate chips are formulated to hold their shape. They contain less cocoa butter and often added stabilisers, precisely so they survive an oven without spreading into the batter.
That makes them right for cookies where you want distinct pockets of chocolate, and wrong for a ganache, a mousse or anything that needs to melt smoothly. Chips melt reluctantly and can seize.
By weight the swap is one for one — 170 g of chips is 170 g of chopped chocolate — but the result is different. For melting, use bar chocolate.
Melting without ruining it
Chocolate seizes if it meets a small amount of water, and it scorches easily. Both are avoidable.
Microwave: 20-second bursts at medium power, stirring between each. Stop when most of it is melted and let the residual heat finish the job.
Bain-marie: a bowl over — not touching — barely simmering water. Keep steam away from the chocolate; a few drops of condensation will seize it.
Cocoa percentages, and what they mean for a recipe
The percentage on a bar is the proportion of the bar that comes from the cocoa bean — cocoa solids plus cocoa butter. The rest is mostly sugar.
70% dark — about 30% sugar. The default for most "dark chocolate" recipes.
55–60% semi-sweet — what most American recipes assume, and what standard chocolate chips are.
Frequently asked questions
How many grams is a cup of chocolate chips?
About 170 g for standard chips. Mini chips pack more densely at about 180 g per cup because there is less air between them.
How many grams is a cup of cocoa powder?
About 85 g. Cocoa is very light and full of air, which is why the number is so much lower than most powders.
Should cocoa powder be sifted before or after measuring?
If the recipe says 'sifted cocoa', sift first and then measure. If it says 'cocoa, sifted', measure first. The two give noticeably different amounts because cocoa clumps.
Can I substitute chocolate chips for chopped chocolate?
By weight, yes, but they behave differently. Chips contain stabilisers that help them keep their shape, so they do not melt into a batter the way chopped bar chocolate does.
What is the difference between natural and Dutch-process cocoa?
Natural cocoa is acidic and activates baking soda. Dutch-process has been alkalised, so it does not — recipes using it normally rely on baking powder instead. Swapping them without adjusting the leavener causes flat, oddly-flavoured bakes.