How many calories are in Snacks, M&M Mars?

A 100 g serving of Snacks, M&M Mars has 420 kcal. The calories in your portion depend on its weight and how it is prepared.

How much protein is in Snacks, M&M Mars?

Per 100 g there are 4.5 g of protein — about 9% of the Daily Value (50 g).

How much fat and carbs are in Snacks, M&M Mars?

Per 100 g there are 13 g of fat and 72.3 g of carbohydrate, including 2.6 g of fiber.

What nutrients is Snacks, M&M Mars high in?

Per 100 g it notably contributes to your Daily Value for: Calcium (83% DV), Magnesium (17% DV).

Sweets & Snacks

Snacks, M&M Mars

USDA reference values for snacks, m&m mars (per 100 g).

420kcalCalories

4.5gProtein

13gFat

72.3gCarbs

Protein, fat and carb balance

Share of calories from each macronutrient (per 100 g).

Protein 4.3%
Fat 28%
Carbs 67.8%

What this food is high in

83% Calcium 1,084 mg / 100 g 17% Magnesium 70 mg / 100 g

Shown as percent of the Daily Value per 100 g.

Full nutrition facts (per 100 g)

Nutrient	Per 100 g	% DV*
Macronutrients
Protein	4.5 g	9%
Total Fat	13 g	17%
Saturated Fat	4.7 g	24%
Carbohydrate	72.3 g	26%
Dietary Fiber	2.6 g	9%
Total Sugars	38.8 g	78%
Minerals
Sodium	246 mg	11%
Potassium	279 mg	6%
Calcium	1,084 mg	83%
Iron	1.4 mg	8%
Magnesium	70 mg	17%
Vitamins
Vitamin C	0.1 mg	<1%
Vitamin A	15 mcg	2%
Vitamin D	—
Other
Cholesterol	0 mg	0%

* Percent of the Daily Value (Daily Value, based on a 2,000 kcal diet).

Data source: USDA FoodData Central. Values are per 100 g of edible portion and are reference figures — they vary by variety, preparation and brand. Last updated: 2026-04-30.

Frequently asked questions

How many calories are in Snacks, M&M Mars?: A 100 g serving of Snacks, M&M Mars has 420 kcal. The calories in your portion depend on its weight and how it is prepared.
How much protein is in Snacks, M&M Mars?: Per 100 g there are 4.5 g of protein — about 9% of the Daily Value (50 g).
How much fat and carbs are in Snacks, M&M Mars?: Per 100 g there are 13 g of fat and 72.3 g of carbohydrate, including 2.6 g of fiber.
What nutrients is Snacks, M&M Mars high in?: Per 100 g it notably contributes to your Daily Value for: Calcium (83% DV), Magnesium (17% DV).

Similar foods and comparisons

Baking Chocolate, Mars Snackfood Us 517 kcal 4.4 g protein Baking Chocolate, Mars Snackfood Us 502 kcal 4.8 g protein Baking Chocolate, Mexican 426 kcal 3.6 g protein Baking Chocolate, Unsweetened 472 kcal 12.1 g protein Baking Chocolate, Unsweetened 642 kcal 14.3 g protein Breakfast Bar 376 kcal 4.4 g protein

Compare Snacks, M&M Mars with: Baking Chocolate, Mars Snackfood Us Baking Chocolate, Mars Snackfood Us Baking Chocolate, Mexican Baking Chocolate, Unsweetened

Note. This information is provided for general reference only and is not medical advice or a diet prescription. If you have a medical condition or special dietary needs, consult a physician or a registered dietitian.