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Protein Bar Calories
High protein, convenient snack
CALORIES
GI
POTASSIUM
FIBER
Quick answer
1 piece (medium) of Protein Bar (50 g) has 175 calories. That works out to 350 calories per 100 g. It contains 17.5 g of carbs, 15 g of protein, 4 g of fat and 3.5 g of fiber. Its 0.5 µg of B12 covers 21% of the Daily Value. Its glycemic index is 55 (medium), so it raises blood sugar at a moderate pace.
Protein Bar Nutrition Facts
Selected: 100 g
350
KCAL / 100G
Carbs
35g
· 13% DV
Protein
30g
· 60% DV
Fat
8g
· 10% DV
Fiber
7g
· 25% DV
DV is the share of the daily value covered, on a 2,000 kcal reference diet.
Calories come from: Carbs 42% · Protein 36% · Fat 22%
Protein Bar Vitamins & Minerals
Vitamins
B12
1µg · 42% DV
B2
0.4mg · 31% DV
B6
0.5mg · 29% DV
B1
0.3mg · 25% DV
Minerals
Phosphorus
200mg · 29% DV
Iron
3mg · 17% DV
Magnesium
60mg · 14% DV
Sodium
300mg · 13% DV
How Nutritious Is Protein Bar?
Nutrient density
Medium
How many vitamins, minerals and how much fiber this food carries per calorie. A high score means a lot of nutrition for few calories.
Satiety score
High
An EatBetter score computed from fiber, protein and calorie density. A high score means staying full longer on the same calories.
Both scores are calculated per 100 g and do not change with the selected portion. The satiety score is EatBetter's own calculation, not a clinical measure.
Protein Bar Glycemic Index
GLYCEMIC INDEX
GLYCEMIC LOAD
Accounts for portion size — a more realistic measure than GI alone.
How to Burn Off Protein Bar
To burn the 350 calories in 100 g:
🚶
Walking (5 km/h)
🏃
Running (8 km/h)
🚴
Cycling
🏊
Swimming
Times are calculated with the MET equation for a 70 kg adult. Actual burn varies with your weight, age and pace.
Is Protein Bar Processed?
NOVA 3
Processed
1. Unprocessed
2. Minimally Processed
3. Processed
4. Ultra-Processed
NOVA classifies foods into 4 groups by industrial processing. NOVA 1 (unprocessed) is the healthiest.
Does Protein Bar Contain Allergens?
Contains these allergens:
Which Diets Is Protein Bar Good For?
Vegan
— Not suitable
Vegetarian
✓ Suitable
Gluten-Free
— Not suitable
Dairy-Free
— Not suitable
Mediterranean
— Not suitable
Paleo
— Not suitable
Whole30
— Not suitable
DASH
— Not suitable
Keto
— Not suitable
Low FODMAP
— Not suitable
Protein Bar Fat Profile
SATURATED
2.5g
MONOUNSATURATED
2.8g
POLYUNSATURATED
2.3g
Omega 6:3 ratio 8:1
Above the ideal 4:1 (8:1).
Compare Protein Bar
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Frequently Asked Questions About Protein Bar
Is a protein bar better before or after a workout?
It can be especially useful after training when a proper meal is not available soon. Before exercise, try a small amount first if you have a sensitive stomach, since added fibre or sugar alcohols can cause discomfort.
Can a protein bar replace a meal?
It can work as a temporary backup when you are short on time, but it is not an ideal regular meal replacement. Most bars do not provide the food variety of a balanced meal with minimally processed protein foods, vegetables and fruit.
Why do protein bars cause bloating or gas for some people?
Ingredients such as inulin, polydextrose, sugar alcohols and added fibres may trigger gas, cramps or bloating in sensitive people. Starting with half a bar and drinking water can help you assess tolerance.
How should I choose between a protein bar and protein powder?
Protein powder is often simpler in formulation and makes it easier to adjust how much protein you use. A protein bar is more portable and may feel more filling, but it typically contains more added ingredients.
Is it okay to eat a protein bar every day?
It can fit into a daily routine depending on the product and your overall diet, but it should not be your main protein source. Check the individual label for added sugars, saturated fat, sodium and sugar alcohols.
Will eating a protein bar at night cause weight gain?
Eating one at night does not by itself cause weight gain; overall energy intake over time matters more. If you are hungry late in the day, choose an option that does not upset your digestion or disrupt sleep.
Can a protein bar help manage sweet cravings?
A bar containing protein and fibre can be a more satisfying alternative when you want something sweet. However, very sweet flavours may keep the preference for sweet-tasting foods strong for some people.
What should I check first when buying a protein bar?
Look at the ingredient list, the type of protein used and the amount of added sugar. Also check allergen statements carefully, as protein bars may contain gluten, soy, dairy, peanuts and tree nuts.
Are protein bars suitable for people with diabetes?
Suitability depends on the specific bar, serving size and the person’s glucose-management plan. Carbohydrate sources, added sugars and sugar alcohols vary greatly between brands, so label reading and individual medical advice are important.
Are protein bars processed even when they are marketed as natural?
Yes. Protein bars are generally processed foods made with ingredients such as protein isolates, sweeteners, binders and flavourings. A “natural” claim does not mean a product is minimally processed or that it should be eaten without limit.
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Nutrition data compiled from USDA FoodData Central and scientific sources.