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MyProtein

Peanut Butter Protein Bar

Peanut Butter · Pea Protein Isolate, Peanut Flour · 38g serving

#367in Protein Bar(433)
✓ Vegan
XRay Score
27/100
Performance
P/kcal$P:F▾ CFb
At-a-Glance
8g
Protein /serving
7.6g
Fiber /serving
193
kcal /serving
4.1g
Protein /100kcal
Performance
ProteinEfficiencyValue forMoneyLeannessLow CarbFiber
Where to Buy
Myprotein InternationalBest value
12-Pack (12 x 38g) · 12 servings
US$2.06/serving(approx.)
US$24.73 for pack
Buy Now
Check retailer for shipping
🇺🇸 Prices in USD
View more buying options

XRay Summary

  • Ranks #367 of 433 · XRay Score 27/100
  • Strength: Fiber (Top 13%)
  • Weakness: Leanness (Bottom 96%)
  • Protein Source: Pea Protein
  • Flavor: Nutty
  • Dietary: Vegan

Peanut Butter Protein Bar by MyProtein falls below the category average in the protein bar category with an XRay Score of 27/100, placing #367 out of 433. Its strongest dimension is fiber (top 13%), providing meaningful fiber per serving. On the flip side, the fat-to-protein ratio is higher than average (bottom 96% of the category). It's powered by pea protein, a popular plant-based source with a strong amino acid profile. It comes in a nutty flavor profile. This product also is vegan.

How It Ranks

Ranked against 433 products in this category.

XRay Score5D weighted score across all dimensions
#367 of 433
27/100XRay Score
Protein Efficiencygrams of protein per 100 kcal — higher is better
#406 of 433
4.1g/100kcal8.0g/serving6th percentile
Value for Moneygrams of protein per unit of currency — higher is better
#361 of 401
3.88 g/US$10th percentile
Leannessprotein-to-fat ratio — higher is better
#401 of 419
0.8:14th percentile
Low Carbnet carbs per 100g — lower is better
#53 of 379
16.8g/100g6.4g/serving86th percentile
Fiberfiber per 100g — higher is better
#48 of 366
20.0g/100g7.6g/serving87th percentile

Leaderboard

XRay Score — Protein Bar (433 products)

RankProductProtein Eff.g/100kcalScore/100
#1
David Protein Bar, Cake Batter
David Protein Bar, Cake Batter
David
18.7g/100kcal97
···
#365
Organic Protein Bars, Variety Pack
Organic Protein Bars, Variety Pack
Aloha
6.1g/100kcal27
#366
Toffee Crunch
Toffee Crunch
MyProtein
4.0g/100kcal27
#367
Peanut Butter Protein Bar
Peanut Butter Protein Bar
MyProtein
4.1g/100kcal27
#368
The Myprotein Bar (Pistachio)
The Myprotein Bar (Pistachio)
MyProtein
6.7g/100kcal27
#369
Vegan Protein Bar, Double Dark Chocolate Chip
Vegan Protein Bar, Double Dark Chocolate Chip
BHU Foods
3.0g/100kcal26
See all 433 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=433)
Learn more about our methodology →

Macro Split

193kcal/serving
Protein
18%
Fat
51%
Carbs
31%

Nutrition

Macronutrient breakdown and product details.

NutrientPer Serving (38g)Per 100g
Energy193kcal507.89kcal
Protein8g21.05g
Total Fat10g26.32g
Sat. Fat4.9g12.89g
Carbohydrates14g36.84g
Fiber7.6g20g
Sugar3.3g8.68g
Sodium80mg210.53mg

Shop

Best prices across retailers — shown in your selected currency.

ProductRetailerPricePer ServingShips to
12-Pack (12 x 38g)456g · 12 sv
Best Value
Myprotein International
AD, AL + 57 more
£18.49
£1.54/sv
Buy Now
12-Pack (12 x 38g)456g · 12 servings
Myprotein International
Best Value
£18.49
US$24.73
£1.54/serving
AD, AL + 57 more
Buy
Prices shown in each retailer's original currency. Shipping availability and delivery to your country depend on the retailer.

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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Your Protein. Your Rules. Ranked. We rank based on published nutrition data — no sponsored rankings, no mystery grades. Just numbers.

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MyProtein Peanut Butter Protein Bar
MyProteinPeanut Butter Protein BarProtein Bar · Nutty · Pea Protein · #367 of 433 Protein Bars
Vegan
XRay Score
27/100
Weighted across
5 dimensions
Protein Efficiency4.1 g/100kcalValue for Money3.9 g/$Leanness0.8:1 P:FLow Carb16.8g net/100gFiber20.0 g/100g
This productProtein Bar avg
Nutrition
/ serving 38g/ 100g
Calories193 kcal508 kcal
Protein8.0g21g
Fat10g26g
Carbs (total)14g37g
Fiber7.6g20g
Sugar3.3g8.7g
Macro Split
193kcal/svg
Protein
18%
Fat
51%
Carbs
31%
Protein Bar Rankings
Value
Rank
Protein Efficiency
4.1 g/100kcal
#406/433
Value for Money
3.9 g/$
#361/401
Leanness
0.8:1 P:F
#401/419
Low Carb
16.8g net/100g
#53/379
Fiber
20.0 g/100g
#48/366
MacroXray logoMACROXRAY
Generated on Jun 11, 2026 bymacroxray.com
YOUR PROTEIN.YOUR RULES. RANKED.
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