Dark chocolate calories by the ounce and the bar
170 calories in an ounce of 70 to 85% dark chocolate
An ounce of dark chocolate with 70 to 85% cacao has 170 calories. USDA's bar of it weighs 101 g and has 604 calories.
Half that bar is 50.5 g and 302 calories. USDA's own bars run from 101 g to 162 g, so check the weight on your wrapper.
USDA FoodData Central. Chocolate, dark, 70 to 85% cacao solids. USDA FoodData Central. Chocolate, dark, 45 to 59% cacao solids. Source checked September 29, 2026.
Ounces and bars at three cacao levels
An ounce of 60 to 69% dark chocolate has 164 calories, and an ounce of 45 to 59% has 155. USDA's bars for those two are 112 g and 162 g, with 648 and 885 calories.
| Portion | Weight | Calories kcal | Protein g | Carbs g | Fat g | Fiber g | Sugar g | Sodium mg | Caffeine mg | Portion source |
|---|---|---|---|---|---|---|---|---|---|---|
| 1 oz, 70 to 85% cacao | 28.35 g | 170 | 2.2 | 13 | 12.1 | 3.1 | 6.8 | 5.7 | 22.7 | USDA portion, 1 oz |
| 1 bar, 70 to 85% cacao | 101 g | 604 | 7.9 | 46.4 | 43.1 | 11 | 24.2 | 20.2 | 80.8 | USDA portion, 1 bar |
| Half a bar, 70 to 85% cacao | 50.5 g | 302 | 3.9 | 23.2 | 21.5 | 5.5 | 12.1 | 10.1 | 40.4 | Half a bar, computed from USDA's 1 bar |
| 1 oz, 60 to 69% cacao | 28.35 g | 164 | 1.7 | 14.9 | 10.9 | 2.3 | 10.4 | 2.8 | 24.4 | USDA portion, 1 oz |
| 1 bar, 60 to 69% cacao | 112 g | 648 | 6.9 | 58.7 | 42.9 | 9 | 41.1 | 11.2 | 96.3 | USDA portion, 1 bar |
| 1 oz, 45 to 59% cacao | 28.35 g | 155 | 1.4 | 17.3 | 8.9 | 2 | 13.6 | 6.8 | 12.2 | USDA portion, 1 oz |
| 1 bar, 45 to 59% cacao | 162 g | 885 | 7.9 | 99.1 | 50.7 | 11.3 | 77.6 | 38.9 | 69.7 | USDA portion, 1 bar |
USDA FoodData Central. Chocolate, dark, 70 to 85% cacao solids. USDA FoodData Central. Chocolate, dark, 60 to 69% cacao solids. USDA FoodData Central. Chocolate, dark, 45 to 59% cacao solids. Source checked September 29, 2026.
Fat, sugar and fiber in an ounce
An ounce of 70 to 85% dark chocolate has 12.1 g of fat, 13 g of carbs and 3.1 g of fiber. Of the carbs, 6.8 g are sugar.
Snacking on something else? Almonds, popcorn and peanut butter have their own pages, and the full list of calorie references has more.
| Nutrient | 1 oz, 70 to 85% cacao | Per 100 g |
|---|---|---|
| Calories | 170 kcal | 598 kcal |
| Protein | 2.2 g | 7.8 g |
| Carbs | 13 g | 45.9 g |
| Fat | 12.1 g | 42.6 g |
| Fiber | 3.1 g | 10.9 g |
| Sugar | 6.8 g | 24 g |
| Sodium | 5.7 mg | 20 mg |
USDA FoodData Central. Chocolate, dark, 70 to 85% cacao solids. Source checked September 29, 2026.
Sugar and calories by cacao level
Per 100 g, USDA lists 598 calories and 24 g of sugar for 70 to 85% dark chocolate. For 60 to 69% it lists 579 calories and 36.7 g of sugar, and for 45 to 59% it lists 546 calories and 47.9 g.
Of the three, the one with the most cacao has the most calories and the least sugar per 100 g.
| Preparation | Weight | Calories kcal | Protein g | Carbs g | Fat g | Fiber g | Sugar g | Sodium mg | Caffeine mg |
|---|---|---|---|---|---|---|---|---|---|
| Dark chocolate, 70 to 85% cacao | 100 g | 598 | 7.8 | 45.9 | 42.6 | 10.9 | 24 | 20 | 80 |
| Dark chocolate, 60 to 69% cacao | 100 g | 579 | 6.1 | 52.4 | 38.3 | 8 | 36.7 | 10 | 86 |
| Dark chocolate, 45 to 59% cacao | 100 g | 546 | 4.9 | 61.2 | 31.3 | 7 | 47.9 | 24 | 43 |
USDA FoodData Central. Chocolate, dark, 70 to 85% cacao solids. USDA FoodData Central. Chocolate, dark, 60 to 69% cacao solids. USDA FoodData Central. Chocolate, dark, 45 to 59% cacao solids. Source checked September 29, 2026.
Caffeine in dark chocolate
USDA lists caffeine for all three. An ounce of 70 to 85% has 22.7 mg, an ounce of 60 to 69% has 24.4 mg and an ounce of 45 to 59% has 12.2 mg.
USDA FoodData Central. Chocolate, dark, 70 to 85% cacao solids. USDA FoodData Central. Chocolate, dark, 60 to 69% cacao solids. USDA FoodData Central. Chocolate, dark, 45 to 59% cacao solids. Source checked September 29, 2026.
Weigh the squares you break off
Squares differ from bar to bar, so weigh what you broke off and enter the grams. The calculator uses 70 to 85% dark chocolate.
Chocolate in a dessert or trail mix? Describe it to TrueCal and review the estimate.
28.35 g has about 170 calories.
USDA FoodData Central. Chocolate, dark, 70 to 85% cacao solids. Source checked September 29, 2026.
How many calories are in a square of dark chocolate?
USDA doesn't list a square, and squares vary by bar. Weigh one and use 598 calories per 100 g for 70 to 85% cacao, or enter the weight in the calculator above.
USDA FoodData Central. Chocolate, dark, 70 to 85% cacao solids. Source checked September 29, 2026.
How much caffeine is in a dark chocolate bar?
USDA's 101 g bar of 70 to 85% dark chocolate has 80.8 mg of caffeine. Its 112 g bar of 60 to 69% has 96.3 mg.
USDA FoodData Central. Chocolate, dark, 70 to 85% cacao solids. USDA FoodData Central. Chocolate, dark, 60 to 69% cacao solids. Source checked September 29, 2026.
Log the portion you ate
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USDA FoodData Central. Chocolate, dark, 70 to 85% cacao solids. USDA FoodData Central. Chocolate, dark, 60 to 69% cacao solids. USDA FoodData Central. Chocolate, dark, 45 to 59% cacao solids. Source checked September 29, 2026.