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Barebells

Protein Bar (Peanut Butter)

Peanut Butter · Calcium Caseinate, Whey Protein Isolate, Whey Protein Concentrate, Bovine Collagen Hydrolysate, Soy Protein Isolate · 55g serving

#97in Protein Bar(344)
Collagen
1/3
XRay Score
68/100
Performance
P/kcal$P:F▾ CFb
At-a-Glance
20g
Protein /serving
3g
Fiber /serving
210
kcal /serving
9.5g
Protein /100kcal
Performance
ProteinEfficiencyValue forMoneyLeannessLow CarbFiber
Where to Buy
Amazon USBest value
12-pack · 12 servings
US$2.67/serving
US$31.99 for pack
Buy Now
Ships to: USA
🇺🇸 Prices in USD
Affiliate link · we may earn a small commission
View more buying options

XRay Summary

  • Ranks #97 of 344 · XRay Score 68/100
  • Strength: Protein Efficiency (Top 19%)
  • Weakness: Fiber (Bottom 68%)
  • Protein Source: Milk Blend

Protein Bar (Peanut Butter) by Barebells holds a solid ranking in the protein bar category with an XRay Score of 68/100, placing #97 out of 344. Its strongest dimension is protein efficiency (top 19%), offering excellent protein-to-calorie efficiency. On the flip side, it doesn't contribute much dietary fiber (bottom 68% of the category). The protein comes from a milk protein blend, combining the benefits of both whey and casein.

How It Ranks

Ranked against 344 products in this category.

XRay Score5D weighted score across all dimensions
#97 of 344
68/100XRay Score
Protein Efficiencygrams of protein per 100 kcal — higher is better
#65 of 344
9.5g/100kcal20.0g/serving81st percentile
Value for Moneygrams of protein per unit of currency — higher is better
#81 of 310
7.50 g/US$74th percentile
Leannessprotein-to-fat ratio — higher is better
#85 of 333
2.5:175th percentile
Low Carbnet carbs per 100g — lower is better
#172 of 302
30.9g/100g17.0g/serving43rd percentile
Fiberfiber per 100g — higher is better
#205 of 300
5.5g/100g3.0g/serving32nd percentile

Leaderboard

XRay Score — Protein Bar (344 products)

RankProductProtein Eff.g/100kcalScore/100
#1
David Protein Bar, Cake Batter
David Protein Bar, Cake Batter
David
18.7g/100kcal97
···
#95
Myprotein Layered Bar (Jimmy's Coffee - Mocha)
Myprotein Layered Bar (Jimmy's Coffee - Mocha)
MyProtein
9.4g/100kcal68
#96
High Protein Bars, White Chocolate
High Protein Bars, White Chocolate
think!
8.7g/100kcal68
#97
Protein Bar (Peanut Butter)
Protein Bar (Peanut Butter)
Barebells
9.5g/100kcal68
#98
Combat Ready™ Protein Bar, Confetti Birthday Cake
Combat Ready™ Protein Bar, Confetti Birthday Cake
MusclePharm
8.7g/100kcal68
#99
Carb Killa High Protein Bar (Chocolate Chip Cookie Dough)
Carb Killa High Protein Bar (Chocolate Chip Cookie Dough)
Grenade
11.1g/100kcal67
See all 344 ranked →

Performance

Visual comparison across the 5 dimensions and macronutrient split.

Radar

How this product compares on each dimension — overlaid on the category median (gray). Larger area is always better. Hover any label for raw values and formula.

ProteinEfficiencyValue forMoneyLeannessLow CarbFiber
This productAverage Protein Bar(n=344)
Learn more about our methodology →

Macro Split

210kcal/serving
Protein
34%
Fat
31%
Carbs
35%

Nutrition

Macronutrient breakdown and product details.

NutrientPer Serving (55g)Per 100g
Energy210kcal381.82kcal
Protein20g36.36g
Total Fat8g14.55g
Sat. Fat3.5g6.36g
Carbohydrates20g36.36g
Fiber3g5.45g
Sugar2g3.64g
Sodium210mg381.82mg

Shop

Best prices across retailers — shown in your selected currency.

ProductRetailerPricePer ServingShips to
12-pack660g · 12 sv
Best Value
Amazon US
USA
US$31.99
US$2.67/sv
Buy Now
12-pack660g · 12 servings
Amazon US
Best Value
US$31.99
US$2.67/serving
USA
Buy
Prices shown in each retailer's original currency. Shipping availability and delivery to your country depend on the retailer. Affiliate disclosure: when you click a “Buy” link and make a purchase, we may earn a small commission at no extra cost to you.

Disclaimer — All nutritional data and product information is provided to the best of our knowledge based on publicly available sources and may contain inaccuracies. MacroXray is not responsible for discrepancies between listed and actual product data. Nothing on this site constitutes medical, dietary, or nutritional advice. Always consult a qualified healthcare professional before making changes to your diet. Dietary restriction labels (e.g. gluten-free, vegan) are based on ingredient information and may not account for cross-contamination or manufacturing processes — always verify with the manufacturer if you have allergies or intolerances. Halal, Kosher and other certifications shown are based on product labeling or third party site descriptions; actual certification status may vary by region and should be confirmed with the certifying body or manufacturer. Prices shown are sourced from third-party retailers at the time of last scan and may have changed since then. MacroXray is not a retailer and does not sell products directly.

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BarebellsProtein Bar (Peanut Butter)Protein Bar · Other · Milk Blend · #97 of 344 Protein Bars
XRay Score
68/100
Weighted across
5 dimensions
Protein Efficiency9.5 g/100kcalValue for Money7.5 g/$Leanness2.5:1 P:FLow Carb30.9g net/100gFiber5.5 g/100g
This productProtein Bar avg
Nutrition
/ serving 55g/ 100g
Calories210 kcal382 kcal
Protein20g36g
Fat8.0g15g
Carbs (total)20g36g
Fiber3.0g5.5g
Sugar2.0g3.6g
Macro Split
210kcal/svg
Protein
34%
Fat
31%
Carbs
35%
Protein Bar Rankings
Value
Rank
Protein Efficiency
9.5 g/100kcal
#65/344
Value for Money
7.5 g/$
#81/310
Leanness
2.5:1 P:F
#85/333
Low Carb
30.9g net/100g
#172/302
Fiber
5.5 g/100g
#205/300
MACROXRAY
Generated on May 9, 2026 bymacroxray.com
YOUR PROTEIN.YOUR RULES. RANKED.
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