M&M's fun size calories come to 150 for a 1 oz portion (28 g) and 535 per 100 g. Half of those calories come from fat, and each ounce carries 14.4 g of sugar. The candy itself is predictable. What changes the total is how many little packs get opened in one sitting.
150kcal
1 1 oz portion · 28 g, fun size milk chocolate candies
6%protein
2.1 gProtein
17 gCarbs
8.3 gFat
How to burn off 150 kcal
—Walking, brisk
—Jogging
—Cycling, moderate
—Swimming
Skip the math. BodyPal counts these calories from your steps and workouts automatically.
Nutrition facts
Fun size milk chocolate candies · per 28 g
Calories
150 kcal
Protein
2.1 g
Carbohydrate
16.6 g
Fat
8.3 g
Saturated fat
5.2 g
Cholesterol
6 mg
Sodium
22 mg
Potassium
104 mg
Iron
0.7 mg
Source: USDA FoodData Central
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Verified nutrition data
Numbers on this page come from USDA FoodData Central, the U.S. Department of Agriculture’s food composition database, and from manufacturer labels where a branded product is named. Last verified September 2026. How we verify our data →
M&M's fun size: calories, protein and sodium by serving
Percent of daily value uses the FDA reference of 2,000 kcal a day.
Serving
kcal
Protein
Carbs
Fat
Sodium
% DV kcal
1 oz portion (28 g)
150
2.1 g
16.6 g
8.3 g
22 mg
7%
Small piece (7 g)
37
0.5 g
4.2 g
2.1 g
6 mg
2%
Full size bar (44 g)
235
3.4 g
26.1 g
13.1 g
35 mg
12%
100 g
535
7.7 g
59.4 g
29.7 g
79 mg
27%
3 × 1 oz portion (28 g)
449
6.4 g
66 mg
5 × 1 oz portion (28 g)
749
10.7 g
111 mg
Three ounces is a 449-calorie handful
A 1 oz portion (28 g) lands at 150 calories, about 7% of a standard daily value. That sounds modest, and on its own it is. The problem with fun size candy is that it rarely stays at one portion. Two ounces bring you to 300 calories, three reach 449, and five come to 749 calories, which is more than many full meals.
Smaller amounts are easier to track. A small piece (7 g) holds 37 calories, or 2% of the daily value, so a few pieces after lunch barely register. At the other end, a full size bar (44 g) is 235 calories and 12% of the daily value. Fun size exists to sit between those two, but only if you stop at one.
The practical move is to decide the number before the bag opens. Count packs, not handfuls, because handfuls drift upward. If you log snacks, BodyPal can record the candy from a photo, which makes the third pack harder to ignore.
Half the calories come from fat
The calorie split is 50% fat, 44% carbs and 6% protein. Per 100 g that works out to 29.7 g of fat, 59.4 g of carbs and 7.7 g of protein. Milk chocolate is the main reason: it is dense in both cocoa butter and sugar, and the candy shell adds more sugar on top.
Most of those carbs are sugar. Of the 59.4 g of carbs per 100 g, 51.5 g are sugars, which leaves very little room for anything else. Fiber is 3.4 g per 100 g, or 1 g in a 1 oz portion. That is not nothing, but it does little to slow you down.
Protein is the weak spot. A 1 oz portion gives 2.1 g of protein, just 4% of the daily value. Even five ounces deliver only 10.7 g alongside 749 calories. As a source of protein this candy is a poor deal, and it will not keep you full for long.
Sugar and saturated fat are the rows to watch
Each 1 oz portion carries 14.4 g of sugar, and a full size bar carries 22.7 g. Per 100 g the figure is 51.5 g, so more than half the weight of the candy is sugar. If you track added sugar, this is the number that will move first.
Saturated fat is the other notable row. Per 100 g there are 18.5 g of saturated fat, close to the 20 g daily value used on this page. You will not eat 100 g in one sitting most days, but a few fun size packs get you a good part of the way there. Cholesterol is 23 mg per 100 g against a daily value of 300 mg, so it matters much less.
Sodium is not a concern here. A 1 oz portion has 22 mg, which is 1% of the daily value, and even 100 g only reach 79 mg. If you watch salt, chocolate candy is not where it hides. Sugar and saturated fat are where your attention belongs.
One pack fits a day; a bowl of them does not
At 150 calories per ounce, a single portion fits into most eating days without trouble. The catch is that it adds sugar and fat while giving very little protein or fiber back. Treat it as dessert, not as a snack meant to hold you until dinner.
Pairing helps. Eating a portion after a meal that already had protein and vegetables means the candy is the finish, not the fuel. Eaten on an empty stomach, sugar-heavy snacks tend to lead to a second and a third pack, and that is how 150 turns into 449.
If you want chocolate more often, keep the packs out of reach and take one at a time. Fun size packaging only does its job when each pack is a separate decision. Portion control is the whole value of buying this format over a full size bar.
How does M&M's fun size compare?
Here is how M&M's fun size stacks up against chocolate almonds, a chocolate truffle and a chocolate cupcake, per 100 g and per usual serving.
Verdict: For the smallest calorie hit pick a single chocolate truffle at 61 calories, since a 1 oz portion of chocolate almonds runs 157 and a chocolate cupcake runs 320. For staying full pick chocolate almonds, which bring 13 g of protein per 100 g against 7.7 g for M&M's fun size at a similar calorie level.
M&M's fun size FAQs
How many calories are in fun size M&M's?
Milk chocolate candies are 535 calories per 100 g, so a 1 oz (28 g) portion is 150 calories and a single 7 g piece is 37 calories.
Are fun size M&M's good for weight loss?
A 1 oz portion is 150 calories with 8.3 g of fat and 14.4 g of sugar, and 100 g comes to 535 calories.
M&M's fun size vs chocolate almonds: which has more calories?
Plain milk chocolate is 535 calories per 100 g and milk chocolate with almonds is 526, so a 1 oz portion is 150 calories versus 147.
How much sugar is in fun size M&M's?
Milk chocolate candies have 51.5 g of sugar per 100 g, which is 14.4 g in a 1 oz portion, alongside 2.1 g of protein.
How many calories are in two ounces of fun size M&M's?
Two 1 oz portions add up to 300 calories. That amount also carries 4.3 g of protein and 44 mg of sodium, so the calories rise much faster than anything filling.
How many calories are in a full size bar compared with fun size?
A full size bar (44 g) has 235 calories, while a 1 oz portion (28 g) of fun size has 150. The bar is 12% of the daily value for calories; the fun size portion is 7%.
How much fat is in fun size M&M's?
A 1 oz portion has 8.3 g of fat, and fat supplies 50% of the calories. Per 100 g there are 29.7 g of fat, of which 18.5 g are saturated.
Do fun size M&M's have much protein?
No. A 1 oz portion gives 2.1 g of protein, only 4% of the daily value. Protein makes up just 6% of the calories, so the candy does little to keep you full.
Are fun size M&M's high in sodium?
Not at all. A 1 oz portion holds 22 mg of sodium, about 1% of the daily value, and 100 g contain only 79 mg. Sugar and saturated fat are the bigger rows.
