Onion vs Zucchini
Calories, macronutrients and nutrition facts compared side by side (per 100g).
Nutrition Comparison
| Per 100g | Onion | Zucchini |
|---|---|---|
| Calories | 40kcal | 17kcal |
| Protein | 1.1g | 1.2g |
| Carbs | 9.3g | 3.1g |
| Fat | 0.1g | 0.3g |
| Fiber | 1.7g | 1g |
| Sugar | 4.2g | 2.5g |
| Sodium | 4mg | 8mg |
Green marks the more favorable value (fewer calories/sugar/sodium, more protein/fiber).
Key Takeaways
- Zucchini has 23 fewer calories per 100g than Onion (135% less).
- Zucchini delivers more protein (1.2g vs 1.1g per 100g).
- Onion has more fiber (1.7g vs 1g).
- Onion contains less fat (0.1g vs 0.3g).
- Zucchini has less sugar (2.5g vs 4.2g).
Onion
Onions are low in calories and a notable source of quercetin, an antioxidant flavonoid, plus prebiotic fibers that feed gut bacteria. Their sulfur compounds — released when chopped — are being studied for cardiovascular benefits.
View Onion nutrition →Zucchini
Zucchini's high water and fiber content make it filling for very few calories — ideal for bulking up meals during weight loss. It contains lutein and zeaxanthin, carotenoids that support eye health, plus vitamin C and potassium. Spiralized as 'zoodles', it's a popular low-carb pasta swap.
View Zucchini nutrition →Track Onion & Zucchini in Kairo
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