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Onion vs. Cauliflower — In-Depth Nutrition Comparison

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What are the differences between Onion and Cauliflower?

  • Cauliflower is richer than Onion in Vitamin C, Vitamin K, Vitamin B5, Folate, and Choline.
  • Cauliflower's daily need coverage for Vitamin C is 45% more.
  • Onion has 2 times more Sugar than Cauliflower. While Onion has 4.24g of Sugar, Cauliflower has only 1.91g.

We used Onions, raw and Cauliflower, raw types in this article.

Infographic

Onion vs Cauliflower infographic
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Mineral Comparison

Mineral comparison score is based on the number of minerals by which one or the other food is richer. The "coverage" charts below show how much of the daily needs can be covered by 300 grams of the food.
Onion
1
Magnesium Magnesium Calcium Calcium Potassium Potassium Iron Iron Copper Copper Zinc Zinc Phosphorus Phosphorus Sodium Sodium Manganese Manganese Selenium Selenium 7.1% 6.9% 13% 7.9% 13% 4.6% 12% 0.52% 17% 2.7%
Magnesium Magnesium Calcium Calcium Potassium Potassium Iron Iron Copper Copper Zinc Zinc Phosphorus Phosphorus Sodium Sodium Manganese Manganese Selenium Selenium 11% 6.6% 26% 16% 13% 7.4% 19% 3.9% 20% 3.3%
Contains less SodiumSodium -86.7%
Contains more MagnesiumMagnesium +50%
Contains more PotassiumPotassium +104.8%
Contains more IronIron +100%
Contains more ZincZinc +58.8%
Contains more PhosphorusPhosphorus +51.7%
Contains more ManganeseManganese +20.2%
Contains more SeleniumSelenium +20%
~equal in Calcium ~22mg
~equal in Copper ~0.039mg

Vitamin Comparison

Vitamin comparison score is based on the number of vitamins by which one or the other food is richer. The "coverage" charts below show how much of the daily needs can be covered by 300 grams of the food.
Onion
1
Vitamin C Vit. C Vitamin A Vit. A Vitamin E Vit. E Vitamin D Vit. D Vitamin B1 Vit. B1 Vitamin B2 Vit. B2 Vitamin B3 Vit. B3 Vitamin B5 Vit. B5 Vitamin B6 Vit. B6 Vitamin B12 Vit. B12 Vitamin K Vit. K Folate Folate Choline Choline 25% 0.12% 0.4% 0% 12% 6.2% 2.2% 7.4% 28% 0% 1% 14% 3.3%
Vitamin C Vit. C Vitamin A Vit. A Vitamin E Vit. E Vitamin D Vit. D Vitamin B1 Vit. B1 Vitamin B2 Vit. B2 Vitamin B3 Vit. B3 Vitamin B5 Vit. B5 Vitamin B6 Vit. B6 Vitamin B12 Vit. B12 Vitamin K Vit. K Folate Folate Choline Choline 161% 0% 1.6% 0% 13% 14% 9.5% 40% 42% 0% 39% 43% 24%
Contains more Vitamin AVitamin A +∞%
Contains more Vitamin CVitamin C +551.4%
Contains more Vitamin EVitamin E +300%
Contains more Vitamin B2Vitamin B2 +122.2%
Contains more Vitamin B3Vitamin B3 +337.1%
Contains more Vitamin B5Vitamin B5 +442.3%
Contains more Vitamin B6Vitamin B6 +53.3%
Contains more Vitamin KVitamin K +3775%
Contains more FolateFolate +200%
Contains more CholineCholine +626.2%
~equal in Vitamin D ~0µg
~equal in Vitamin B1 ~0.05mg
~equal in Vitamin B12 ~0µg

Macronutrient Comparison

Macronutrient breakdown side-by-side comparison
Onion
1
9% 89%
Protein: 1.1 g
Fats: 0.1 g
Carbs: 9.34 g
Water: 89.11 g
Other: 0.35 g
2% 5% 92%
Protein: 1.92 g
Fats: 0.28 g
Carbs: 4.97 g
Water: 92.07 g
Other: 0.76 g
Contains more CarbsCarbs +87.9%
Contains more ProteinProtein +74.5%
Contains more FatsFats +180%
Contains more OtherOther +117.1%
~equal in Water ~92.07g

Fat Type Comparison

Fat type breakdown side-by-side comparison
Onion
1
58% 18% 24%
Saturated Fat: Sat. Fat 0.042 g
Monounsaturated Fat: Mono. Fat 0.013 g
Polyunsaturated fat: Poly. Fat 0.017 g
67% 17% 16%
Saturated Fat: Sat. Fat 0.13 g
Monounsaturated Fat: Mono. Fat 0.034 g
Polyunsaturated fat: Poly. Fat 0.031 g
Contains less Sat. FatSaturated Fat -67.7%
Contains more Mono. FatMonounsaturated Fat +161.5%
Contains more Poly. FatPolyunsaturated fat +82.4%

Carbohydrate type comparison

Carbohydrate type breakdown side-by-side comparison
Onion
3
23% 46% 30%
Starch: 0 g
Sucrose: 0.99 g
Glucose: 1.97 g
Fructose: 1.29 g
Lactose: 0 g
Maltose: 0 g
Galactose: 0 g
49% 51%
Starch: 0 g
Sucrose: 0 g
Glucose: 0.94 g
Fructose: 0.97 g
Lactose: 0 g
Maltose: 0 g
Galactose: 0 g
Contains more SucroseSucrose +∞%
Contains more GlucoseGlucose +109.6%
Contains more FructoseFructose +33%
~equal in Starch ~0g
~equal in Lactose ~0g
~equal in Maltose ~0g
~equal in Galactose ~0g

Comparison summary table

Pay attention to the rightmost column. It displays the amounts side by side, giving a clearer understanding of the difference.
Onion Cauliflower
Lower in Sodium ok
Lower in Saturated Fat ok
Lower in Glycemic Index ok
Lower in price ok
Lower in Sugar ok
Rich in minerals ok
Rich in vitamins ok
Lower in Cholesterol Equal

All nutrients comparison - raw data values

Nutrient Onion Cauliflower Opinion
Calories 40kcal 25kcal Onion
Protein 1.1g 1.92g Cauliflower
Fats 0.1g 0.28g Cauliflower
Vitamin C 7.4mg 48.2mg Cauliflower
Net carbs 7.64g 2.97g Onion
Carbs 9.34g 4.97g Onion
Magnesium 10mg 15mg Cauliflower
Calcium 23mg 22mg Onion
Potassium 146mg 299mg Cauliflower
Iron 0.21mg 0.42mg Cauliflower
Sugar 4.24g 1.91g Cauliflower
Fiber 1.7g 2g Cauliflower
Copper 0.039mg 0.039mg
Zinc 0.17mg 0.27mg Cauliflower
Phosphorus 29mg 44mg Cauliflower
Sodium 4mg 30mg Onion
Vitamin A 2IU 0IU Onion
Vitamin E 0.02mg 0.08mg Cauliflower
Manganese 0.129mg 0.155mg Cauliflower
Selenium 0.5µg 0.6µg Cauliflower
Vitamin B1 0.046mg 0.05mg Cauliflower
Vitamin B2 0.027mg 0.06mg Cauliflower
Vitamin B3 0.116mg 0.507mg Cauliflower
Vitamin B5 0.123mg 0.667mg Cauliflower
Vitamin B6 0.12mg 0.184mg Cauliflower
Vitamin K 0.4µg 15.5µg Cauliflower
Folate 19µg 57µg Cauliflower
Choline 6.1mg 44.3mg Cauliflower
Saturated Fat 0.042g 0.13g Onion
Monounsaturated Fat 0.013g 0.034g Cauliflower
Polyunsaturated fat 0.017g 0.031g Cauliflower
Tryptophan 0.014mg 0.02mg Cauliflower
Threonine 0.021mg 0.076mg Cauliflower
Isoleucine 0.014mg 0.071mg Cauliflower
Leucine 0.025mg 0.106mg Cauliflower
Lysine 0.039mg 0.217mg Cauliflower
Methionine 0.002mg 0.02mg Cauliflower
Phenylalanine 0.025mg 0.065mg Cauliflower
Valine 0.021mg 0.125mg Cauliflower
Histidine 0.014mg 0.056mg Cauliflower
Fructose 1.29g 0.97g Onion
Omega-3 - ALA 0.015g Cauliflower
Omega-6 - Linoleic acid 0.013g Cauliflower

Which food is preferable for your diet?

ok
ok
is better in case of low diet
Onion Cauliflower
Low Calories diet ok
Low Fats diet ok
Low Carbs diet ok
Low Glycemic Index diet ok

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Vitamins & Minerals Daily Need Coverage Score

The summary scores indicate the extent to which this food can fulfill your daily vitamin and mineral requirements if you consume 3 servings, consisting of 100 grams of each (an approximation of 3 serving sizes).
Vitamins Daily Need Coverage Score
8%
Onion
30%
Cauliflower
Minerals Daily Need Coverage Score
8%
Onion
13%
Cauliflower

Comparison summary

Which food contains less Sodium?
Onion
Onion contains less Sodium (difference - 26mg)
Which food is lower in Saturated Fat?
Onion
Onion is lower in Saturated Fat (difference - 0.088g)
Which food is lower in glycemic index?
Onion
Onion is lower in glycemic index (difference - 15)
Which food is cheaper?
Onion
Onion is cheaper (difference - $0.2)
Which food is lower in Sugar?
Cauliflower
Cauliflower is lower in Sugar (difference - 2.33g)
Which food is richer in minerals?
Cauliflower
Cauliflower is relatively richer in minerals
Which food is richer in vitamins?
Cauliflower
Cauliflower is relatively richer in vitamins
Which food contains less Cholesterol?
?
The foods are relatively equal in Cholesterol (0 mg)

References

All the values for which the sources are not specified explicitly are taken from FDA’s Food Central. The exact link to the food presented on this page can be found below.

  1. Onion - https://fdc.nal.usda.gov/fdc-app.html#/food-details/170000/nutrients
  2. Cauliflower - https://fdc.nal.usda.gov/fdc-app.html#/food-details/169986/nutrients

All the Daily Values are presented for males aged 31-50, for 2000-calorie diets.

Data provided by FoodStruct.com should be considered and used as information only. Please consult your physician before beginning any diet.