View full-size photo · Photo: Open Food Facts contributors, CC BY-SA
Mars Bar
Mars Bar by Mars provides 452 kcal per 100 g, with 61 g of sugars and 4 g of protein. That is 48% more sugar than the average product in this category. Its Nutri-Score is E. It is listed in the Bars covered with chocolate category.
Nutrient levels per 100 g
Levels use UK front-of-pack reference thresholds.
Nutrition facts
| Nutrient | Per 100 g | Category avg |
|---|---|---|
| Calories | 452 kcal | 488 −7% |
| Total fat | 17 g | 26.7 −36% |
| Saturated fat | 10 g | 14.7 −32% |
| Carbohydrates | 70 g | 53.2 +32% |
| Total sugars | 61 g | 41.3 +48% |
| Protein | 4 g | 7.4 −46% |
| Salt | 0.3 g | 0.3 |
*% Daily Value for 100 g, based on a 2,000-calorie diet (FDA reference values). Category average across 364 Bars covered with chocolate products on Foodmetria.
Compared with other bars covered with chocolate
Bar shows the share of products in this category that contain less of the nutrient.
Product details
- Sold in
- France
- Barcode
- 5000159505949
Prices reported by shoppers
Loading prices…
Frequently asked questions
How many calories are in Mars Bar?
Mars Bar contains 452 kcal per 100 g.
How much sugar is in Mars Bar?
Mars Bar has 61 g of sugars per 100 g, which is considered high by UK front-of-pack guidelines.
Is Mars Bar healthy?
It has a Nutri-Score of E (A is best, E is worst). Scores describe nutritional quality and processing, not suitability for your individual diet.
Source: Open Food Facts (ODbL). Last updated March 25, 2026. Spotted a mistake? Edit this product on Open Food Facts. Not medical advice — always check the package label.
Reviews
Compare & rankings
Healthier alternatives
Best in category →Same category, meaningfully better on at least one measure and no worse on the others. Each card shows what improves.
c NOVA 4 
d 
d 
d NOVA 4 More bars covered with chocolate
View all →
e NOVA 4 
NOVA 4 
e NOVA 4 
NOVA 4 
e NOVA 4 
e NOVA 4 More from Mars
View all →
e NOVA 4 
e NOVA 4 
e NOVA 4 
e NOVA 4 
e NOVA 4 
e NOVA 4