Chocolate & Cocoa
Convert ounces of cocoa powder to cups
One ounce of cocoa powder weighs about 0.334 cup, and half a ounce comes to roughly 0.167 cup. Enter any amount below to convert it, or use the chart further down as a quick reference while you cook.
1 oz of cocoa powder =
0.334 cup
About 1/3 cup in recipe notation
- ml
- 78.9
- tbsp
- 5.34
Cocoa Powder: 85 g per US cup · FAO / INFOODS density database. Cocoa clumps badly. Sifted it measures about 75 g per cup, packed it can reach 100 g — always weigh cocoa.
Full cocoa powder chart →Cocoa Powder at a glance
Every number on this page comes from a single figure: 85 grams per US cup (FAO / INFOODS density database).
- 1 cup
- 85 g
- 1 tablespoon
- 5.31 g
- 1 teaspoon
- 1.77 g
- 1 cup in ounces
- 3 oz
- 100 g in cups
- 1.18 cups
- Density
- 0.36 g/ml
ounces to cups chart for cocoa powder
Print it, screenshot it, or bookmark this page — these are the amounts recipes ask for most often.
| Ounces (weight) | Cups (US) | Tablespoons (US) | Millilitres |
|---|---|---|---|
| 0.5 oz | 0.167 cup | 2.67 tbsp | 39.5 ml |
| 1 oz | 0.334 cup | 5.34 tbsp | 78.9 ml |
| 2 oz | 0.667 cup | 10.7 tbsp | 158 ml |
| 3 oz | 1 cup | 16 tbsp | 237 ml |
| 4 oz | 1.33 cup | 21.3 tbsp | 316 ml |
| 5 oz | 1.67 cup | 26.7 tbsp | 395 ml |
| 6 oz | 2 cup | 32 tbsp | 473 ml |
| 8 oz | 2.67 cup | 42.7 tbsp | 631 ml |
| 12 oz | 4 cup | 64 tbsp | 947 ml |
| 16 oz | 5.34 cup | 85.4 tbsp | 1263 ml |
How this conversion is calculated
Volume-to-weight conversions are only as good as the density behind them. We treat cocoa powder as 85 g per US customary cup, which works out to 0.359 g/ml. From there:
- Your ounces figure is converted into millilitres or grams using standard unit sizes (oz = 28.3 g).
- The density above bridges volume and weight in whichever direction you need.
- The result is rounded the way a cook would round it — to the nearest gram, or to a usable fraction such as 1 1/8 cups.
Measuring cocoa powder accurately
Cocoa clumps badly. Sifted it measures about 75 g per cup, packed it can reach 100 g — always weigh cocoa.
If a recipe matters to you — bread, macarons, anything with a tight hydration or ratio — weigh it. A £10 digital scale removes the single largest source of variation in home baking, and it is faster than washing three measuring cups.
When cups are fine
- Liquids measured in a proper jug, where volume is the honest unit anyway.
- Forgiving savoury cooking: soups, stews, stir-fries, marinades.
- Small amounts of leaveners and spices, as long as you use level spoons.
Frequently asked questions
How many cups are in 1 ounce of cocoa powder?
1 ounce of cocoa powder is 0.334 cup. This is based on a density of 85 g per US cup.
How many cups are in 2 ounces of cocoa powder?
2 ounces of cocoa powder is 0.667 cup, and 0.167 cup for half a ounce.
How much is 100 g of cocoa powder in cups?
100 g of cocoa powder is about 1 1/8 cups. Weight is always the more reliable measurement, so use a scale when the recipe gives grams.
Why do other sites give a different number for cocoa powder?
Cocoa clumps badly. Sifted it measures about 75 g per cup, packed it can reach 100 g — always weigh cocoa.
Do UK and Australian cups give the same result?
No. A US customary cup is 236.6 ml, a metric cup used in Australia and New Zealand is 250 ml, and an old UK imperial cup is 284 ml. Our default is the US cup, but you can pick metric cups in the converter.