Mars Duo

Packaged product Sweets and Desserts Mars

Mars Duo contains 448 kcal per 100 g.

Roughly 62% of its calories come from carbohydrates, with 34% from fat and 4% from protein (estimated with general energy factors).

That is close to the median for sweets and desserts on FoodFactly (486 kcal per 100 g).

The values are as declared on the product label and entered by Open Food Facts contributors.

Mars Duo by Mars, product photo
Photo: Open Food Facts, CC BY-SA 3.0, Open Food Facts contributors
448kcal per 100 g
4.3 gprotein
69 gcarbohydrates
17 gfat

Nutrition facts

The source reports no household measures (such as cups or pieces) for this food, so only weights are offered.

Nutrition facts for the selected amount
NutrientAmount per 100 g% DV
Calories L 448 kcal
Total fat L 17 g 22%
Saturated fat L 8.1 g 41%
Sodium L 168 mg 7%
Total carbohydrates L 69 g 25%
Dietary fiber not reported
Total sugars L 60 g
Added sugars L 55.6 g 111%
Protein L 4.3 g 9%

% DV: percent of the FDA Daily Value for adults (reference amounts). Letters show how each value was obtained: M measured, C calculated, L label, Z assumed zero, I imputed. Vitamins and minerals not listed were not reported by the source.

Nutritional breakdown

Protein: 4%Carbohydrates: 62%Fat: 34%448kcal / 100 g
  • Protein 4%
  • Carbohydrates 62%
  • Fat 34%

Approximate share of calories, using general energy factors (4 kcal/g protein and carbohydrate, 9 kcal/g fat, 7 kcal/g alcohol).

Nutritional insights

  • Protein4.3 gin the lowest quarter of sweets and desserts (median 7 g)
  • Sugars60 gin the top quarter of sweets and desserts (median 43.2 g)
  • Fat17 gbelow the median for sweets and desserts (median 25 g)
  • Saturated fat8.1 gbelow the median for sweets and desserts (median 12 g)
  • Sodium168 mgin the top quarter of sweets and desserts (median 135 mg)
  • Protein per 100 kcal0.96 gprotein density, useful for comparing foods with different calorie levels

Product details

Brand
Mars
Barcode
5000159519328
Quantity
78.8g
Category
coated-chocolate-bar-without-biscuit
Packaging
Plastic
Nutri-Score
E as computed by Open Food Facts
NOVA group
4 processing level (1 to 4), as classified by Open Food Facts

Ingredients

Sucre, sirop de glucose, lait écrémé en poudre, beurre de cacao, pâte de cacao, huile de tournesol, matière grasse du lait, lactese et protéines de petit lait, petit-lait en poudre, matière grasse de palme, cacao maigre, extrait de malt d'orge, émulsifiant (lécithine de soja), sel, blanc doeuf en poudre, protéine de lait, extrait naturel de vanille.

As listed on the package and transcribed by Open Food Facts contributors. Always check the package for allergens.

Ingredient guides: SugarGlucose syrupCocoa butterSunflower oilSalt

Similar products

FoodCaloriesProteinCarbsFat
Mars Mars 450 4 g 70 g 16.8 g
Graze chocolate cookie Graze 437 7.2 g 42 g 23 g
Peanut Nougat Choccy Bar Buttermilk 486 5.4 g 62 g 25 g
Milka Choco Snack Milka 496 6.3 g 49 g 30 g
Barre Vanille chocolat Brennos 399 20 g 35 g 19 g
Creamy Milk Chokay 498 9 g 23.5 g 37.4 g
Starbar Duo Cadbury 508 10 g 54.1 g 27 g
Quaker Stila Fit Chocolate Quaker 387 6.5 g 67 g 10.4 g

Per 100 g. Calories in kcal. n/a: not reported by the source.

Frequently asked questions

How many calories are in Mars Duo?

100 g of Mars Duo has 448 kcal.

How much protein is in Mars Duo?

Mars Duo contains 4.3 g of protein per 100 g (9% of the 50 g Daily Value). About 4% of its calories come from protein. Compared with other sweets and desserts, that is in the lowest quarter (median 7 g).

How many carbs are in Mars Duo?

Mars Duo has 69 g of total carbohydrates per 100 g, including 60 g of sugars. Label conventions differ: in the EU and some other regions carbohydrates are declared without fiber.

How much fat is in Mars Duo?

Mars Duo contains 17 g of fat per 100 g, of which 8.1 g is saturated (41% of the Daily Value).

How much sodium is in Mars Duo?

100 g contains 168 mg of sodium, 7% of the 2,300 mg Daily Value.

Where does this nutrition data come from?

From Open Food Facts, record dated March 17, 2026. FoodFactly last checked it on November 6, 2026. Each value above shows whether it was measured, calculated or taken from a label.

Source of the nutrition information

  • Open Food Facts, record 5000159519328. License: ODbL 1.0 (Open Food Facts). Source record dated March 17, 2026. Imported November 6, 2026.

Last updated: . Source description: "MARS DUO". Data quality score: 80/100 (how it is calculated).

Product data from Open Food Facts, made available under the Open Database License. Values are as declared on the label; labels can change over time, so check the package you have.

General nutrition information, not medical advice. Individual needs differ; see our disclaimer.