ONE Birthday Cake Protein Bar vs Perfect Bar Original Peanut Butter Protein Bar
ONE Birthday Cake Protein Bar edges ahead on a protein + calorie + rating blend. ONE Birthday Cake Protein Bar scores higher in that blend because it offers more protein per serving (20g vs 17g), a lighter calorie hit (220 vs 330), more protein per 100 calories (9.1g vs 5.2g).
Full side-by-side of protein, calories, macros, and protein density for ONE Birthday Cake Protein Bar and Perfect Bar Original Peanut Butter Protein Bar below.
ONE
Wins on: Protein, Calories, Sugar, Fiber, Sodium, Carbs, Fat, Protein per 100 cal
Protein
20g
Calories
220
Protein per 100 cal
9.1g
Pros
- More protein per serving: 20g vs 17g.
- Lower calorie load: 220 calories vs 330.
- Better protein density: 9.1g protein per 100 calories.
Cons
- Weaker review score: 4.4 vs 4.7.
Perfect Bar

Protein
17g
Calories
330
Protein per 100 cal
5.2g
Pros
- Stronger shopper rating: 4.7 vs 4.4.
Cons
- Less protein per serving: 17g vs 20g.
- Higher calorie count: 330 vs 220.
| Metric | ONE Birthday Cake Protein Bar | Perfect Bar Original Peanut Butter Protein Bar |
|---|---|---|
| Protein | 20gBest | 17g |
| Calories | 220Best | 330 |
| Sugar | 1gBest | 18g |
| Fiber | 4gBest | 3g |
| Sodium | 0.135mgBest | — |
| Carbs | 24gBest | 25g |
| Fat | 7gBest | 18g |
| Protein per 100 cal | 9.1gBest | 5.2g |
“Healthier” depends on your goal — here’s the real winner on every number we track, so two people with different priorities can both get the right answer.
- Protein: ONE Birthday Cake Protein Bar wins, 20g vs 17g.
- Calories: ONE Birthday Cake Protein Bar wins, 220 vs 330.
- Sugar: ONE Birthday Cake Protein Bar wins, 1g vs 18g.
- Fiber: ONE Birthday Cake Protein Bar wins, 4g vs 3g.
- Sodium: ONE Birthday Cake Protein Bar wins, 0.135mg vs —.
- Carbs: ONE Birthday Cake Protein Bar wins, 24g vs 25g.
- Fat: ONE Birthday Cake Protein Bar wins, 7g vs 18g.
- Protein per 100 cal: ONE Birthday Cake Protein Bar wins, 9.1g vs 5.2g.
ONE Birthday Cake Protein Bar edges ahead on a protein + calorie + rating blend.
ONE Birthday Cake Protein Bar scores higher in that blend because it offers more protein per serving (20g vs 17g), a lighter calorie hit (220 vs 330), more protein per 100 calories (9.1g vs 5.2g). This blend won’t match your priorities if sugar, carbs, or diet fit matter more to you than protein, calories, and rating.
Frequently Asked Questions
ONE Birthday Cake Protein Bar has more protein per serving: 20g versus 17g.
ONE Birthday Cake Protein Bar is the lighter option at 220 calories, compared with 330 calories for the alternative.
ONE Birthday Cake Protein Bar is the more protein-dense pick at about 9.1g of protein per 100 calories.
"Healthier" depends on your goal: ONE Birthday Cake Protein Bar has more protein (20g vs 17g); ONE Birthday Cake Protein Bar has less sugar (1g vs 18g); ONE Birthday Cake Protein Bar is lower in calories (220 vs 330). Neither is objectively the "healthiest" for everyone — see the pick-by-priority breakdown above, or try our free AI Snack Finder to get matched to your specific goal.
ONE Birthday Cake Protein Bar edges ahead on a protein + calorie + rating blend. ONE Birthday Cake Protein Bar scores higher in that blend because it offers more protein per serving (20g vs 17g), a lighter calorie hit (220 vs 330), more protein per 100 calories (9.1g vs 5.2g). Because they are in the same category, this is a direct apples-to-apples comparison.
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