Calorie comparison
Green Beans vs Onion
Per 100 grams, green beans is the lighter choice by 9 calories, while green beans 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 | Green Beans | Onion |
|---|---|---|
| Calories | 31 | 40 |
| Protein | 1.8 g | 1.1 g |
| Carbs | 7 g | 9 g |
| Fat | 0.2 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
🫛 Green Beans
1 cup (100 g)
31 cal
1.8 g protein · 7 g carbs · 0.2 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, green beans or onion?
Per 100 g, green beans has 31 calories and onion has 40. Green Beans is lower in calories.
Which has more protein, green beans or onion?
Green Beans has 1.8 g of protein per 100 g; onion has 1.1 g. Green Beans wins on protein.
Is green beans 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 green beans — but portion size matters more than which food you pick.
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