Mars Bar
Packaged product Sweets and Desserts Mars
Mars Bar contains 365 kcal per 100 g. A serving, 1 bar, 39.4 g (39.4 g) provides about 144 kcal.
Roughly 75% of its calories come from carbohydrates, with 22% from fat and 4% from protein (estimated with general energy factors).
That is less energy than the typical item in sweets and desserts on FoodFactly, where the median is 425 kcal per 100 g across 950 products.
100 g provides 19% of the Daily Value for Vitamin B12, 15% of the Daily Value for Riboflavin (B2) and 11% of the Daily Value for calcium.
The values are as declared on the product label and entered by Open Food Facts contributors.
Nutrition facts
| Nutrient | Amount per 100 g | % DV |
|---|---|---|
| Calories L | 365 kcal | |
| Total fat L | 10.6 g | 14% |
| Saturated fat L | 0.39 g | 2% |
| Cholesterol L | 1.5 mg | 0.5% |
| Sodium L | 66.8 mg | 3% |
| Total carbohydrates L | 82.9 g | 30% |
| Dietary fiber L | 0.027 g | 0.1% |
| Total sugars L | 82.8 g | |
| Added sugars L | 76.8 g | 154% |
| Protein L | 4.1 g | 8% |
| Vitamin A L | 1.1 µg | 0.1% |
| Vitamin C L | 0.71 mg | 0.8% |
| Vitamin D L | 0.007 µg | 0% |
| Vitamin E L | 1 mg | 7% |
| Thiamin (B1) L | 0.05 mg | 4% |
| Riboflavin (B2) L | 0.19 mg | 15% |
| Niacin (B3) L | 0.11 mg | 0.7% |
| Pantothenic acid (B5) L | 0.41 mg | 8% |
| Vitamin B6 L | 0.049 mg | 3% |
| Folate (B9) L | 4.2 µg | 1% |
| Vitamin B12 L | 0.47 µg | 19% |
| Calcium L | 148 mg | 11% |
| Iron L | 0.14 mg | 0.8% |
| Magnesium L | 14.7 mg | 4% |
| Phosphorus L | 113 mg | 9% |
| Potassium L | 208 mg | 4% |
| Zinc L | 0.54 mg | 5% |
| Copper L | 0.016 mg | 2% |
| Manganese L | 0.015 mg | 0.6% |
| Selenium L | 5.5 µg | 10% |
| Iodine L | 1.6 µg | 1% |
% 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 75%
- Fat 22%
Approximate share of calories, using general energy factors (4 kcal/g protein and carbohydrate, 9 kcal/g fat, 7 kcal/g alcohol).
Vitamins and minerals, % Daily Value per 100 g
Nutritional insights
- Protein4.1 gin the lowest quarter of sweets and desserts (median 8 g)
- Fiber0.027 gin the lowest quarter of sweets and desserts (median 5.9 g)
- Sugars82.8 gin the top quarter of sweets and desserts (median 26.8 g)
- Fat10.6 gin the lowest quarter of sweets and desserts (median 19 g)
- Saturated fat0.39 gin the lowest quarter of sweets and desserts (median 6.3 g)
- Sodium66.8 mgin the lowest quarter of sweets and desserts (median 163 mg)
- Protein per 100 kcal1.1 gprotein density, useful for comparing foods with different calorie levels
- Water0.36 gwater per 100 g, which largely explains differences between raw, cooked and dried forms
Full nutrient profile
Sugars and starch (1)
| Starch L | 0.008 g |
|---|
Carotenoids (1)
| Beta-carotene L | 0.15 µg |
|---|
Other components (2)
| Water L | 0.36 g |
|---|---|
| Alcohol L | 0 g |
Product details
Ingredients
Sugar, glucose syrup, skimmed milk powder, cocoa butter. cocoa mass, sunflower oil, whey permeate (milk), palm fat, milk fat, fat-reduced cocoa powder, barley malt extract, salt, emulsifier (soya lecithin), egg white powder. (May contain: peanuts and other nuts).
As listed on the package and transcribed by Open Food Facts contributors. Always check the package for allergens.
Ingredient guides: SugarGlucose syrupCocoa butterSunflower oilSaltEgg
Similar products
| Food | Calories | Protein | Carbs | Fat |
|---|---|---|---|---|
| Zero Protein Bar Prozis | 365 | 28 g | 23 g | 17 g |
| Vanilla Almond RXBAR | 365 | 23.1 g | 48.1 g | 11.5 g |
| Banoffee Pie Fruit & Nut Bar Nakd | 365 | 6.9 g | 53.1 g | 13.2 g |
| Rhubarb and Custard Nákd | 365 | 6.6 g | 55.1 g | 12.1 g |
| Bio Frucht-Getreide-Riegel Birne-Banane Babylove | 365 | 3.1 g | 72 g | 7.8 g |
| Strawberry Cranberry Powerbar Coop | 365 | 7.3 g | 65 g | 7.3 g |
| Date & oat bar Hema | 365 | 4 g | 69 g | 6.4 g |
| Honeycomb Chocolate Crunch BC | 365 | 30 g | 6.3 g | 15.8 g |
Per 100 g. Calories in kcal. n/a: not reported by the source.
Frequently asked questions
How many calories are in Mars Bar?
100 g of Mars Bar has 365 kcal. Serving, 1 bar, 39.4 g (39.4 g): about 144 kcal.
How much protein is in Mars Bar?
Mars Bar contains 4.1 g of protein per 100 g (8% of the 50 g Daily Value), or 1.6 g in serving, 1 bar, 39.4 g (39.4 g). About 4% of its calories come from protein. Compared with other sweets and desserts, that is in the lowest quarter (median 8 g).
How many carbs are in Mars Bar?
Mars Bar has 82.9 g of total carbohydrates per 100 g, including 0.027 g of fiber and 82.8 g of sugars. Label conventions differ: in the EU and some other regions carbohydrates are declared without fiber.
How much fat is in Mars Bar?
Mars Bar contains 10.6 g of fat per 100 g, of which 0.39 g is saturated (2% of the Daily Value).
What vitamins and minerals does Mars Bar contain?
Per 100 g, the most notable amounts relative to the Daily Value are Vitamin B12 (19% DV), Riboflavin (B2) (15% DV), calcium (11% DV) and selenium (10% DV). The full list is in the vitamins and minerals table above.
How much sodium is in Mars Bar?
100 g contains 66.8 mg of sodium, 3% of the 2,300 mg Daily Value.
Where does this nutrition data come from?
From Open Food Facts, record dated February 28, 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 5000159551823. License: ODbL 1.0 (Open Food Facts). Source record dated February 28, 2026. Imported November 6, 2026.
Last updated: . Data quality score: 100/100 (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.