Label data · how much protein in a protein bar
Protein bars: protein and calories per bar on every wrapper we track
A protein bar's two honest numbers are protein and calories per bar; their ratio — grams of protein per 100 kcal — is the fairest way to compare a 150-kcal bar with a 250-kcal one. We track 100 flavors; the brand pages list every flavor, and the ranking pages sort them by that ratio.
100 bar labels
- Lowest
- 12 g
- Median
- 20 g
- Highest
- 28 g
Protein per bar, from the wrappers. Protein per 100 kcal runs from 5.7 to 20.0 g (median 9.5).
What to check on the label
- Protein per bar and calories per bar — then protein per 100 kcal
- Sugar and sugar alcohols (the 'net carbs' trick)
- Fiber type and allergens
Every flavor, ranked
- Most protein per calorie (with the chart of all 100 flavors)
- Most protein per bar
- Under 200 calories
- All brands
Go deeper
Questions people ask
Which protein bar has the most protein per calorie?
The ranking page sorts all 100 flavors by grams of protein per 100 kcal from their labels — David bars lead at 20 g/150 kcal, most mainstream bars sit around 10 g per 100 kcal.
Is 20 g of protein in a bar a lot?
It's the standard 'protein bar' target, roughly three eggs' worth; whether it's a good deal depends on the calories it comes with.
Part of the open label dataset (CC BY 4.0) · how we read labels · other ingredients: Creatine monohydrate · Whey protein · Plant protein · Collagen peptides · Magnesium · Melatonin · Ashwagandha · Vitamin D3