Mars

Mars Bar — Calories, Nutrition & Ingredients

UPC 5000159605205 Updated 16 Oct 2026

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

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Per serving (40 g): 177 calories. Per 100 g: 442 calories, 4.4 g protein, 16 g fat.

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

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: 7.40 g per 100 g (red above 5 g)
  • Sugars: 65 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: 40 g

Per 100 gPer portion (%RI*)
Energy 1849 kJ / 442 kcal 740 kJ / 177 kcal (9%)
Fat 16 g 6.4 g (9%)
of which saturates 7.4 g 3.0 g (15%)
Carbohydrate 70 g 28 g (11%)
of which sugars 65 g 26 g (29%)
Fibre 0 g 0 g
Protein 4.4 g 1.8 g (4%)
Salt 0.70 g 0.28 g (5%)

*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
Protein4.4 g
Carbohydrates70 g
Sugars65 g
Fibre0 g
Fat16 g
Saturated fat7.4 g
Sodium280 mg

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 Bar

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Frequently asked questions

How many calories are in Mars Bar?

Per 100 g of Mars Bar there are 442 calories.

How much protein is in Mars Bar?

Per 100 g of Mars Bar there are 4.4 g protein.

How many carbohydrates are in Mars Bar?

Per 100 g of Mars Bar there are 70.0 g carbohydrates. Of which 65.0 g sugars.

How much sugar is in Mars Bar?

Per 100 g of Mars Bar there are 65.0 g sugars.

How much sodium (salt) is in Mars Bar?

Per 100 g of Mars Bar there are 280.0 mg sodium. UK guidance is for adults to eat no more than 6 g of salt (about 2,400 mg of sodium) a day.

How much fibre is in Mars Bar?

Per 100 g of Mars Bar there are 0.0 g fibre. Fibre is important for digestive health.

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Nutrition breakdown

Macronutrients

Types of fat

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