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Vegetable comparison

Cauliflower vs Onion

Cauliflower is lower in calories (25 vs 40 kcal per 100g) — 15 kcal less than Onion. Cauliflower has more protein (1.9g vs 1.1g per 100g). For weight management, Cauliflower is usually the more filling choice here — it has fewer calories, more protein and more fibre.

All figures are per 100g, typical values for the common edible portion.

Nutrition compared (per 100g)

NutrientCauliflowerOnionDifference
Calories254015 kcal less in Cauliflower
Protein1.9g1.1g0.8g more in Cauliflower
Carbs5g9.3g4.3g less in Cauliflower
Fat0.3g0.1g0.2g more in Cauliflower
Fibre2g1.7g0.3g more in Cauliflower

Cauliflower vs Onion FAQ

Does Cauliflower or Onion have more calories?
Onion has more calories: 25 kcal vs 40 kcal per 100g.
Which has more protein, Cauliflower or Onion?
Cauliflower has more protein: 1.9g vs 1.1g per 100g.
Is Cauliflower or Onion better for weight loss?
Cauliflower is usually the more filling choice here — it has fewer calories, more protein and more fibre, which can help with weight loss. Total intake still matters most.

Values are typical estimates and vary by brand, ripeness, cut and preparation. Log either food in one tap with the Nutari app for your exact portion.

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