Dark chocolate is one of those foods where portion size matters more than the label “healthy” or “unhealthy.” The nutrition profile can support a high-quality diet, but calories, carbohydrates, sodium, or fat can change the role it plays on your plate.
The numbers below use common USDA FoodData Central references and standard U.S. serving sizes. Branded foods and restaurant portions can differ, so use the package label when you have one.
Dark chocolate nutrition facts (1 oz 70-85% dark chocolate (about 28g))
| Nutrient | Amount |
|---|---|
| Calories | 170 kcal |
| Protein | 2.2 g |
| Carbohydrates | 13 g |
| Dietary fiber | 3.1 g |
| Total fat | 12 g |
| Iron | 3.4 mg |
| Magnesium | 64 mg |
Why dark chocolate can be a smart choice
- Higher cocoa percentages provide more flavanols and less sugar than milk chocolate.
- Small portions can satisfy dessert cravings with stronger flavor, which helps some people stop at one serving.
- Adds iron, magnesium, copper, and polyphenols, but it should still be treated as an energy-dense treat.
Best ways to eat it
Use dark chocolate as part of a complete meal rather than eating it alone. A reliable plate structure is:
- Protein: eggs, tofu, fish, chicken, Greek yogurt, cottage cheese, beans, or a measured protein powder
- High-fiber plants: leafy greens, broccoli, berries, peppers, tomatoes, or other vegetables
- Measured energy source: dark chocolate, whole grains, legumes, nuts, oil, or avocado depending on the meal
This structure helps LeanEat estimate the meal more accurately because the camera can identify each component and the app can separate the calorie-dense items from the high-volume foods.
When to be careful
Dark chocolate is calorie-dense and can contain caffeine, theobromine, and heavy metals depending on brand and cocoa source. Keep servings modest.
Tracking tip
For photo-based calorie tracking, include the full plate, avoid extreme close-ups, and add a short note when the portion is hidden. LeanEat can recognize the food category from the image, but depth and hidden ingredients are easier to estimate when the plate is visible.
Bottom line
Dark chocolate can fit a strong nutrition plan when the portion matches your goal. Track the serving, pair it with protein and plants, and use brand labels when sodium, sugar, or added fat matters.
Frequently asked questions
How many calories are in dark chocolate?
A 1 oz serving of 70-85% dark chocolate has about 170 calories. Bars vary, so the package serving size is the best source for a specific brand.
Is dark chocolate healthy?
It can fit a healthy diet in small portions. The benefit comes from cocoa flavanols and minerals, not from eating large quantities.
What percent dark chocolate is best?
Seventy percent or higher usually gives more cocoa and less sugar. Very high percentages can be bitter but easier to portion.
Can dark chocolate help with cravings?
For some people, yes. A planned 10-20g serving can be more satisfying than low-fat sweets that lead to repeated snacking.
Should I track dark chocolate?
Yes. A few squares can add 100-200 calories quickly, so it is worth logging when you are managing a calorie target.