Protein bar calories
1 piece · 50 g: about 150–260 kcal. 412 kcal per 100 g: 30.3 g protein, 38.4 g carbohydrate, 15.2 g fat.
Approximate value. A USDA branded protein bar record is used as a proxy. Contents vary a lot by brand; allergen tags are cautious.

In portions
| Portion | Amount | Calories |
|---|---|---|
| 1 piece | 50 g | 150–260 kcal |
Nutrition facts (100 g)
| Energy | 412 kcal |
|---|---|
| Protein | 30.3 g |
| Carbohydrate | 38.4 g |
| Sugar | 15.2 g |
| Fiber | 7.3 g |
| Fat | 15.2 g |
| Saturated fat | 3.4 g |
| Sodium | 436 mg |
Where the calories come from: protein 29% · carbohydrate 38% · fat 33%.
Source: USDA FoodData Central record 173158. The same food can vary by ±25% with its variety, recipe and brand.
Frequently asked questions
Protein bar: how many grams and calories in 1 piece?
1 piece is about 50 g on average and has about 150–260 kcal.
Protein bar: how many calories in 100 grams?
Per 100 g there are 412 kcal, 30.3 g of protein, 38.4 g of carbohydrate and 15.2 g of fat.
Protein bar: how much protein does it have?
Per 100 g there are 30.3 g of protein; 1 piece (50 g) has about 15 g of protein. About 29% of its calories come from protein.
Protein bar: does it make you gain weight?
No single food makes you gain weight on its own; your weight depends on the day’s total calories. 1 piece (50 g) has about 210 kcal: about 10% of a 2,000 kcal day (the reference on nutrition labels). Its energy density is high (4.1 kcal per gram): even a small amount has a lot of calories.
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