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Dark chocolate bar
Dark chocolate bar by Marks & Spencer provides 535 kcal per 100 g, with 50.3 g of sugars and 5.5 g of protein. That is 72% more sugar than the average product in this category. Its Nutri-Score is E and it is classified as NOVA 4 (ultra-processed food). It is listed in the Dark chocolates category.
Nutrient levels per 100 g
Levels use UK front-of-pack reference thresholds.
Nutrition facts
| Nutrient | Per 100 g | Category avg |
|---|---|---|
| Calories | 535 kcal | 554 |
| Total fat | 30.9 g | 40.1 −23% |
| Saturated fat | 19.4 g | 24 −19% |
| Carbohydrates | 56 g | 37 +51% |
| Total sugars | 50.3 g | 29.2 +72% |
| Added sugars | 0 g | 21.6 −100% |
| Dietary fiber | 5.4 g | 9.4 −42% |
| Protein | 5.5 g | 8 −31% |
| Salt | 0 g | 0.1 −74% |
*% Daily Value for 100 g, based on a 2,000-calorie diet (FDA reference values). Category average across 6186 Dark chocolates products on Foodmetria.
Compared with other dark chocolates
Bar shows the share of products in this category that contain less of the nutrient.
Ingredients
nut allergy sugar cocoa mass, cocoa butter, emulsifier, lecithin, dark chocolate contains cocoa solids 50% minimum, not suitable for those with a nut and peanut allergy, suitable for vegans
Additives 2
Overexposure risk is based on EFSA evaluations as recorded by Open Food Facts.
Product details
- Labels & certifications
- VegetarianVegan
- Sold in
- United Kingdom
- Barcode
- 29256907
Prices reported by shoppers
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Frequently asked questions
How many calories are in Dark chocolate bar?
Dark chocolate bar contains 535 kcal per 100 g.
How much sugar is in Dark chocolate bar?
Dark chocolate bar has 50.3 g of sugars per 100 g, which is considered high by UK front-of-pack guidelines.
Is Dark chocolate bar healthy?
It has a Nutri-Score of E (A is best, E is worst); it is in NOVA group 4 — ultra-processed food. Scores describe nutritional quality and processing, not suitability for your individual diet.
Is Dark chocolate bar vegan?
Based on its ingredient list, it appears to be vegan. Always check the package label.
Source: Open Food Facts (ODbL). Last updated March 27, 2026. Spotted a mistake? Edit this product on Open Food Facts. Not medical advice — always check the package label.
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