Calorie comparison
Bell Pepper vs Onion
Per 100 grams, bell pepper is the lighter choice by 9 calories, while onion delivers more protein. The right pick depends on your goal — fewer calories for a cut, more protein to stay full.
Per 100 grams
| Per 100 g | Bell Pepper | Onion |
|---|---|---|
| Calories | 31 | 40 |
| Protein | 1 g | 1.1 g |
| Carbs | 6 g | 9 g |
| Fat | 0.3 g | 0.1 g |
Orange highlights the "better for a calorie deficit" value (fewer calories, fat and carbs; more protein). Your goals decide what "better" means.
Per typical serving
🫑 Bell Pepper
1 medium (119 g)
37 cal
1.2 g protein · 7.1 g carbs · 0.4 g fat
🧅 Onion
1 medium (110 g)
44 cal
1.2 g protein · 9.9 g carbs · 0.1 g fat
Frequently asked
Which has more calories, bell pepper or onion?
Per 100 g, bell pepper has 31 calories and onion has 40. Bell Pepper is lower in calories.
Which has more protein, bell pepper or onion?
Bell Pepper has 1 g of protein per 100 g; onion has 1.1 g. Onion wins on protein.
Is bell pepper or onion better for weight loss?
For a calorie deficit, the lower-calorie, higher-protein option usually helps you stay full on fewer calories. Here that leans toward bell pepper — but portion size matters more than which food you pick.
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