Calories in granola bar (plain, crunchy)
Calories, protein, carbohydrate and fat per 100 g and per serving, from the USDA reference database — plus what actually changes the number on your plate.
Short answer
100 g of granola bar (plain, crunchy) contains 471 kcal, with 10.1 g of protein, 64.4 g of carbohydrate and 19.8 g of fat.
A typical serving — 1 bar, about 25 g — is roughly 118 kcal.
That is a very calorie-dense food: small amounts carry a lot of energy, and it is easy to under-count.
Nutrition facts
| Nutrient | Per 100 g | 1 bar (25 g) |
|---|---|---|
| Calories | 471 kcal | 118 kcal |
| Protein | 10.1 g | 2.5 g |
| Carbohydrates | 64.4 g | 16.1 g |
| Sugars | 28.6 g | 7.1 g |
| Fibre | 5.3 g | 1.3 g |
| Fat | 19.8 g | 5 g |
| Saturated fat | 2.4 g | 0.6 g |
| Cholesterol | 0 mg | 0 mg |
| Sodium | 294 mg | 74 mg |
| Potassium | 336 mg | 84 mg |
| Calcium | 61 mg | 15 mg |
| Iron | 3 mg | 0.7 mg |
| Vitamin C | 0.9 mg | 0.2 mg |
| Water | 4 g | 1 g |
Calories per serving
| Serving | Weight | Calories | Protein | Carbohydrates | Fat |
|---|---|---|---|---|---|
| 1 bar | 25 g | 118 | 2.5 g | 16.1 g | 5 g |
Photograph it instead of looking it up
Wellix identifies granola bar on your plate, estimates the portion and logs calories, protein, carbs and fat in seconds. Free to start on iPhone and Android.
Calories by weight
Use this table when you know the weight but not the serving:
| Amount | Calories | Protein | Carbohydrates | Fat |
|---|---|---|---|---|
| 25 g | 118 | 2.5 g | 16.1 g | 5 g |
| 50 g | 236 | 5.1 g | 32.2 g | 9.9 g |
| 100 g | 471 | 10.1 g | 64.4 g | 19.8 g |
| 150 g | 707 | 15.2 g | 96.6 g | 29.7 g |
| 200 g | 942 | 20.2 g | 128.8 g | 39.6 g |
| 250 g | 1,178 | 25.3 g | 161 g | 49.5 g |
| 300 g | 1,413 | 30.3 g | 193.2 g | 59.4 g |
Where the calories come from
Calories come from three macronutrients: protein and carbohydrate at 4 kcal per gram, fat at 9 kcal per gram. For granola bar (plain, crunchy) the split is:
- Protein: 10.1 g × 4 = 40 kcal — 8% of calories
- Carbohydrates: 64.4 g × 4 = 258 kcal — 54% of calories
- Fat: 19.8 g × 9 = 178 kcal — 37% of calories
- Most of the energy in granola bar (plain, crunchy) comes from carbohydrate (54% of calories).
- It provides 5.3 g of fibre per 100 g, which is a good amount.
- For 200 kcal you can eat about 40 g.
What actually changes the number
Plain granola bars are 471 kcal per 100 g, so a 25 g bar is about 120 kcal and a 40 g "protein" bar around 190. They are dense by design; the label figure is reliable and worth using.
How accurate are these numbers?
The values on this page are reference averages from the USDA FoodData Central database (SR Legacy release), measured on samples of granola bar as sold and prepared in the United States. Your portion will differ: produce varies by variety and ripeness, meat by cut and trim, and anything cooked by the fat and water it gained or lost.
For most foods the per-100 g figure is reliable to within about 10%. The larger uncertainty is almost always the weight of what is on your plate and the cooking fat you cannot see — the two things worth checking before you worry about the database.
How accurate are AI calorie counting apps? →
Related foods
More in Sweets, snacks and bakery →
Frequently asked questions
How many calories are in 100 g of granola bar?
100 g of granola bar (plain, crunchy) contains 471 kcal (10.1 g protein, 64.4 g carbohydrate, 19.8 g fat), according to USDA reference data.
How many calories are in a serving of granola bar?
A typical serving of granola bar — 1 bar, about 25 g — has roughly 118 kcal. Weigh your own portion once to see how it compares; serving sizes vary more than the food does.
How much protein is in granola bar?
Granola bar (plain, crunchy): 10.1 g of protein per 100 g, which is moderate. Foods above about 15–20 g per 100 g, or where protein supplies a third or more of the calories, are usually considered high-protein.
What amount of granola bar equals 200 kcal?
At 471 kcal per 100 g, about 40 g of granola bar equals 200 kcal.
Can I track granola bar by taking a photo?
Yes. A photo calorie app like Wellix identifies granola bar on the plate and estimates the portion from the image. The estimate is most accurate when you confirm the weight or the count, and tell the app about anything the camera cannot see — cooking oil, butter, dressings and sauces.
Source
Nutrition data: U.S. Department of Agriculture, FoodData Central — SR Legacy, FDC ID 167542: "Snacks, granola bars, hard, plain". Values are per 100 g of edible portion. Serving weights are USDA household measures or typical retail sizes; check the label where one exists. View the USDA record.
Wellix provides general nutrition information and is not medical advice. Nutrition values are reference averages and individual foods vary. Consult a qualified healthcare professional before making significant dietary changes.
Photograph it instead of looking it up
Wellix identifies granola bar on your plate, estimates the portion and logs calories, protein, carbs and fat in seconds. Free to start on iPhone and Android.
