Protein bars ranked by protein per calorie
Which protein bar has the most protein per calorie?
Of the 22 protein bars we compared, the most protein per calorie comes from David Protein Bar Chocolate Peanut Butter (28 g protein, 150 kcal), Built Puffs Protein Bar Brownie (17 g protein, 140 kcal) and Built Puffs Protein Bar Churro (17 g protein, 140 kcal). Every number is per bar as labeled.
22 protein bars, each linked to its nutrition label · Updated
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1
David
Protein Bar Chocolate Peanut Butter
1 bar (62 g)
28 g protein
150 kcal · 2 g fiber · 0 g sugar · 200 mg sodium
18.7 g protein per 100 kcal
davidprotein.com · checked Sep 2026
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2
Built
Puffs Protein Bar Brownie
1 bar (40 g)
17 g protein
140 kcal · 0.5 g fiber · 6 g sugar · 90 mg sodium
12.1 g protein per 100 kcal
cdn.shopify.com · checked Sep 2026
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3
Built
Puffs Protein Bar Churro
1 Bar (40g)
17 g protein
140 kcal · 0 g fiber · 7 g sugar · 100 mg sodium
12.1 g protein per 100 kcal
cdn.shopify.com · checked Sep 2026
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4
Built
Puffs Protein Bar Coconut
1 Bar (40g)
17 g protein
140 kcal · 0 g fiber · 6 g sugar · 85 mg sodium
12.1 g protein per 100 kcal
cdn.shopify.com · checked Sep 2026
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5
Built
Puffs Protein Bar Salted Caramel
1 bar
17 g protein
140 kcal · 0 g fiber · 6 g sugar · 160 mg sodium
12.1 g protein per 100 kcal
built.com · checked Sep 2026
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6
Pure Protein
Gluten Free Protein Bar Chocolate
1 bar (50 g)
21 g protein
180 kcal · 2 g fiber · 3 g sugar · 90 mg sodium
11.7 g protein per 100 kcal
cdn.shopify.com · checked Sep 2026
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7
Built
Puffs Protein Bar Cookies & Cream
1 bar
17 g protein
150 kcal · 0 g fiber · 7 g sugar · 95 mg sodium
11.3 g protein per 100 kcal
cdn.shopify.com · checked Sep 2026
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8
Built
Puffs Protein Bar Peanut Butter Cup
1 bar (40 g)
17 g protein
150 kcal · 0 g fiber · 6 g sugar · 110 mg sodium
11.3 g protein per 100 kcal
cdn.shopify.com · checked Sep 2026
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9
Quest
Protein Bar Cookies & Cream
1 bar (60g)
21 g protein
190 kcal · 13 g fiber · 1 g sugar · 300 mg sodium
11.1 g protein per 100 kcal
questnutrition.com · checked Sep 2026
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10
Quest
Protein Bar Chocolate Peanut Butter
1 bar (60g)
20 g protein
190 kcal · 11 g fiber · 1 g sugar · 220 mg sodium
10.5 g protein per 100 kcal
questnutrition.com · checked Sep 2026
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11
Barebells
Protein Bar Caramel Cashew
1 bar
20 g protein
200 kcal · 3 g fiber · 1 g sugar · 80 mg sodium
10 g protein per 100 kcal
shop.barebells.com · checked Sep 2026
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12
Barebells
Protein Bar Chocolate Dough
1 bar
20 g protein
200 kcal · 3 g fiber · 1 g sugar · 150 mg sodium
10 g protein per 100 kcal
shop.barebells.com · checked Sep 2026
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13
Pure Protein
Protein Bar Chocolate Peanut Butter
1 bar (50 g)
20 g protein
200 kcal · 1 g fiber · 2 g sugar · 200 mg sodium
10 g protein per 100 kcal
pureprotein.com · checked Sep 2026
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14
Barebells
Protein Bar Cookies & Cream
1 bar
20 g protein
200 kcal · 3 g fiber · 1 g sugar · 75 mg sodium
10 g protein per 100 kcal
shop.barebells.com · checked Sep 2026
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15
Barebells
Protein Bar Salty Peanut
1 bar
20 g protein
200 kcal · 3 g fiber · 1 g sugar · 105 mg sodium
10 g protein per 100 kcal
shop.barebells.com · checked Sep 2026
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16
Barebells
Protein Bar Coco Caramel Almond
1 bar (55 g)
20 g protein
210 kcal · 3 g fiber · 2 g sugar · 150 mg sodium
9.5 g protein per 100 kcal
shop.barebells.com · checked Sep 2026
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17
Barebells
Protein Bar Cookies & Caramel
1 bar (55 g)
20 g protein
210 kcal · 4 g fiber · 1 g sugar · 150 mg sodium
9.5 g protein per 100 kcal
shop.barebells.com · checked Sep 2026
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18
Barebells
Protein Bar Peanut Butter
1 bar (55 g)
20 g protein
210 kcal · 3 g fiber · 2 g sugar · 210 mg sodium
9.5 g protein per 100 kcal
shop.barebells.com · checked Sep 2026
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19
Built
Puffs Protein Bar Cookie Dough
1 bar (44 g)
15 g protein
160 kcal · 0 g fiber · 8 g sugar · 100 mg sodium
9.4 g protein per 100 kcal
built.com · checked Sep 2026
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20
Built
Puffs Protein Bar S'mores
1 bar (43 g)
15 g protein
160 kcal · 0 g fiber · 9 g sugar · 105 mg sodium
9.4 g protein per 100 kcal
cdn.shopify.com · checked Sep 2026
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21
Ready
Clean Protein Bar Chocolate Peanut Butter
1 bar (52 g)
15 g protein
200 kcal · 7 g fiber · 10 g sugar · 190 mg sodium
7.5 g protein per 100 kcal
teamready.com · checked Sep 2026
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22
Ready
Clean Protein Bar Dark Chocolate
1 bar (56 g)
15 g protein
200 kcal · 7 g fiber · 10 g sugar · 150 mg sodium
7.5 g protein per 100 kcal
teamready.com · checked Sep 2026
How this list works
- What made the list. At least 15 g of protein per bar, from the packaged picks in Plenish's Explore tab.
- Per serving as labeled. One bar, the way the brand's nutrition label lists it. Flavors and recipes change, so check the label before you buy.
- Checked against the label. Each item links to the brand's nutrition label, a retailer page that shows it, or USDA FoodData Central for whole foods. Numbers were checked in September 2026.
- Not a health score. This is a comparison of what's on the label, not diet or medical advice. Plenish isn't paid by any brand on this list.
In the app
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These picks are in Plenish's Explore tab. Search, scan a barcode or snap your plate, and see how much of today's protein, fiber and water goals is left.
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