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Mars Bar Calories & Nutrition Facts

Mars Bar contains 442 kcal per 100g, with 4.5g of protein, 70.0g of carbohydrates, and 16.0g of fat. At 442 kcal per 100g, it is an energy-dense food. A vegetarian-friendly choice.

  • Contains: Dairy, Eggs, Gluten, Soy
  • Dietary: Vegetarian
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UK nutrition data · FSA traffic lights · Reference Intakes

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Nutritional Overview

Mars Bar is a snack or confectionery item typically eaten between meals. Per 100g serving, it provides 442 kcal of energy, 4.5g of protein, 70.0g of carbohydrates, and 16.0g of fat.

Under UK FSA traffic-light labelling, this food is classified as high in sugar with 61.0g per 100g (the threshold is 22.5g). The NHS recommends that free sugars make up no more than 5% of total daily energy intake. Portion awareness is advisable when including it regularly.

Mars Bar is suitable for vegetarian diets, making it a versatile choice for households with mixed dietary requirements.

This is an energy-dense food at 442 kcal per 100g. While it can be part of a balanced diet, portion control is recommended to avoid exceeding daily calorie needs. Mars Bar has 442 kcal per 100g, a real figure worth logging rather than guessing. Our food nutrition finder makes that easy.

Frequently Asked Questions

How many calories are in Mars Bar?

Mars Bar contains 442 kcal per 100g, which is approximately 22% of the recommended daily intake of 2,000 kcal for an average adult. This is considered energy-dense.

Is Mars Bar high in sugar?

Mars Bar contains 61.0g of sugar per 100g, which the FSA classifies as high (above 22.5g per 100g). If you are managing sugar intake, consider moderating portion sizes.

Is Mars Bar suitable for vegetarians?

Yes, Mars Bar is suitable for a vegetarian diet, though it is not vegan as it may contain dairy, eggs, or other animal by-products.

Does Mars Bar contain any allergens?

Yes, Mars Bar contains the following allergens: dairy, eggs, gluten, soy. Under UK food labelling regulations, these must be clearly declared. Always check the product label if you have food allergies or intolerances.

Why is Mars Bar so high in calories?

At 442 kcal per 100g, Mars Bar is energy-dense. Portion control is recommended if you are managing your calorie intake.

Sources & References

Data source for this food

  1. Morrisons — manufacturer's official product page

General nutrition references

  1. British Nutrition Foundation — UK nutrition science and education
  2. USDA FoodData Central — US Department of Agriculture food composition database
  3. NHS Eat Well — UK National Health Service dietary guidance
  4. Food Standards Agency (FSA) — UK food labelling regulations and traffic-light nutrition guidelines
  5. British Dietetic Association (BDA) — UK registered dietitians and evidence-based food fact sheets

Nutritional values are per 100g unless otherwise stated and are provided for general information only. Not a substitute for professional dietary or medical advice. If you have a health condition, allergy, or are pregnant, consult a qualified healthcare professional. Values may vary depending on brand, preparation method, and serving size.

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