Mars

Mars duo — Calories, Nutrition & Ingredients

UPC 5000159551618 Confectioneries Updated 16 Oct 2026

Calories
442per 100 g
Protein
4.5 gper 100 g
Carbs
70 gper 100 g
Fat
16 gper 100 g

Where to buy

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Per serving (78.8 g): 348 calories. Per 100 g: 442 calories, 4.5 g protein, 16 g fat.

Label highlights: Fat: medium Saturates: high Sugars: high

Red means high in the UK front-of-pack traffic-light system. These colours are our calculation from the declared values, not a label on the pack. In this product:

  • Saturates: 7.50 g per 100 g (red above 5 g)
  • Sugars: 61 g per 100 g (red above 22.50 g)
Calculated from the nutrition data on file; check the package label. How the traffic-light colours work »

Nutrition

Portion size: 78.8 g

Per 100 gPer portion (%RI*)
Energy 1849 kJ / 442 kcal 1457 kJ / 348 kcal (17%)
Fat 16 g 12.6 g (18%)
of which saturates 7.5 g 5.9 g (30%)
Carbohydrate 70 g 55.2 g (21%)
of which sugars 61 g 48.1 g (53%)
Protein 4.5 g 3.5 g (7%)
Salt — —

*Reference intake of an average adult (8400 kJ / 2000 kcal)

Calculated from Open Food Facts per-100 g data for the stated serving; values may differ slightly from the package label because of rounding.

Per 100 g and custom amounts

Nutrition per amount

442 calories in 100 g
Protein4.5 g
Carbohydrates70 g
Sugars61 g
Fat16 g
Saturated fat7.5 g

Ingredient flags

Ingredient list not available — flags cannot be shown.

Data: Open Food Facts (ODbL) · Photo: Open Food Facts contributors (CC BY-SA)

Where to buy Mars duo

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Healthier swaps

Same category, better nutrition per 100 g (see methodology).

We compare per-100 g values from Open Food Facts. A swap must be at least as good on sugars, saturates, salt, calories, protein and fibre (where listed) and strictly better on at least one of those nutrients. Check the label for your portion size.

Frequently asked questions

How many calories are in Mars duo?

Per 100 g of Mars duo there are 442 calories.

How much protein is in Mars duo?

Per 100 g of Mars duo there are 4.5 g protein.

How many carbohydrates are in Mars duo?

Per 100 g of Mars duo there are 70.0 g carbohydrates. Of which 61.0 g sugars.

How much sugar is in Mars duo?

Per 100 g of Mars duo there are 61.0 g sugars.

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Nutrition breakdown

Macronutrients

Types of fat

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