All Foods

Carrot vs Onion

Calories, macronutrients and nutrition facts compared side by side (per 100g).

Nutrition Comparison

Per 100gCarrotOnion
Calories41kcal40kcal
Protein0.9g1.1g
Carbs9.6g9.3g
Fat0.2g0.1g
Fiber2.8g1.7g
Sugar4.7g4.2g
Sodium69mg4mg

Green marks the more favorable value (fewer calories/sugar/sodium, more protein/fiber).

Key Takeaways

  • Onion has 1 fewer calories per 100g than Carrot (3% less).
  • Onion delivers more protein (1.1g vs 0.9g per 100g).
  • Carrot has more fiber (2.8g vs 1.7g).
  • Onion contains less fat (0.1g vs 0.2g).
  • Onion has less sugar (4.2g vs 4.7g).

Carrot

Carrots are the leading dietary source of beta-carotene, which the body converts to vitamin A — essential for vision, immune function, and skin health. They contain falcarinol, a compound investigated for its anti-inflammatory effects. Cooking with a little fat improves absorption of fat-soluble carotenoids.

View Carrot nutrition →

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 →

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