Mars

Mars Bar — Calories, Nutrition & Ingredients

157.6g UPC 5000159551823 Bars Updated 16 Oct 2026

Mars Bar
Photo: Open Food Facts contributors, CC BY-SA 3.0
Calories
144per serving
Protein
4.1 gper 100 g
Carbs
82.9 gper 100 g
Fat
10.6 gper 100 g

Where to buy

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Per serving (39.4 g): 144 calories. Per 100 g: 365 calories, 4.1 g protein, 10.6 g fat.

Label highlights: Fat: medium Saturates: low Sugars: high Salt: low HFSS Contains Milk

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:

  • Sugars: 82.80 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: 39.4 g

Typical valuesPer 100 gPer portion (%RI*)
Energy 1528 kJ / 365 kcal 602 kJ / 144 kcal (7%)
Fat 10.6 g 4.2 g (6%)
of which saturates 0.4 g 0.2 g (1%)
Carbohydrate 82.9 g 32.7 g (13%)
of which sugars 82.8 g 32.6 g (36%)
Fibre 0.0 g 0.0 g
Protein 4.1 g 1.6 g (3%)
Salt 0.17 g 0.07 g (1%)

*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

365 calories in 100 g
Protein4.1 g
Carbohydrates82.9 g
Sugars82.8 g
Added sugars76.8 g
Fibre0.0 g
Fat10.6 g
Saturated fat0.4 g
Cholesterol1.5 mg
Sodium67.0 mg
Calcium148 mg
Potassium208 mg
Iron0.1 mg
Vitamin A1.1 mcg
Vitamin C0.7 mg
Vitamin D0.0 mcg

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

Where to buy Mars Bar

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Ingredients

Barley malt extract, Cocoa butter, Cocoa paste, Emulsifier, Fat reduced cocoa powder, Glucose syrup, Lecithin, Milkfat, Palm fat, Powdered egg white, Salt, Skimmed milk powder, Soya lecithin, Sugar, Sunflower oil, Whey permeate

Allergens

Contains: Milk

May contain: Nuts, Peanuts

Frequently asked questions

How many calories are in Mars Bar?

Per 100 g of Mars Bar there are 365 calories.

How much protein is in Mars Bar?

Per 100 g of Mars Bar there are 4.13 g protein.

How many carbohydrates are in Mars Bar?

Per 100 g of Mars Bar there are 82.911 g carbohydrates. Of which 82.797 g sugars.

How much sugar is in Mars Bar?

Per 100 g of Mars Bar there are 82.797 g sugars.

How much sodium (salt) is in Mars Bar?

Per 100 g of Mars Bar there are 67.036 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 0.027 g fibre. Fibre is important for digestive health.

What are the main ingredients in Mars Bar?

The main ingredients in Mars Bar are: Barley malt extract, Cocoa butter, Cocoa paste, Emulsifier, Fat reduced cocoa powder.

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Level of processing

4
Highly Processed
16 ingredients · 1 food additive
UnprocessedUltra-processed

Nutrition breakdown

Macronutrients

Types of fat

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