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Cauliflower vs. Onion — In-Depth Nutrition Comparison

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What are the differences between Cauliflower and Onion?

  • 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.
  • Cauliflower has 39 times more Vitamin K than Onion. While Cauliflower has 15.5µg of Vitamin K, Onion has only 0.4µg.
  • The amount of Sugar in Cauliflower is lower.

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

Infographic

Cauliflower vs Onion 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.
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%
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%
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%
Contains less SodiumSodium -86.7%
~equal in Calcium ~23mg
~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.
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%
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%
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%
Contains more Vitamin AVitamin A +∞%
~equal in Vitamin D ~0µg
~equal in Vitamin B1 ~0.046mg
~equal in Vitamin B12 ~0µg

Macronutrient Comparison

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

Fat Type Comparison

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

Carbohydrate type comparison

Carbohydrate type breakdown side-by-side comparison
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
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
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.
Cauliflower Onion
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 Cauliflower Onion Opinion
Calories 25kcal 40kcal Onion
Protein 1.92g 1.1g Cauliflower
Fats 0.28g 0.1g Cauliflower
Vitamin C 48.2mg 7.4mg Cauliflower
Net carbs 2.97g 7.64g Onion
Carbs 4.97g 9.34g Onion
Magnesium 15mg 10mg Cauliflower
Calcium 22mg 23mg Onion
Potassium 299mg 146mg Cauliflower
Iron 0.42mg 0.21mg Cauliflower
Sugar 1.91g 4.24g Cauliflower
Fiber 2g 1.7g Cauliflower
Copper 0.039mg 0.039mg
Zinc 0.27mg 0.17mg Cauliflower
Phosphorus 44mg 29mg Cauliflower
Sodium 30mg 4mg Onion
Vitamin A 0IU 2IU Onion
Vitamin E 0.08mg 0.02mg Cauliflower
Manganese 0.155mg 0.129mg Cauliflower
Selenium 0.6µg 0.5µg Cauliflower
Vitamin B1 0.05mg 0.046mg Cauliflower
Vitamin B2 0.06mg 0.027mg Cauliflower
Vitamin B3 0.507mg 0.116mg Cauliflower
Vitamin B5 0.667mg 0.123mg Cauliflower
Vitamin B6 0.184mg 0.12mg Cauliflower
Vitamin K 15.5µg 0.4µg Cauliflower
Folate 57µg 19µg Cauliflower
Choline 44.3mg 6.1mg Cauliflower
Saturated Fat 0.13g 0.042g Onion
Monounsaturated Fat 0.034g 0.013g Cauliflower
Polyunsaturated fat 0.031g 0.017g Cauliflower
Tryptophan 0.02mg 0.014mg Cauliflower
Threonine 0.076mg 0.021mg Cauliflower
Isoleucine 0.071mg 0.014mg Cauliflower
Leucine 0.106mg 0.025mg Cauliflower
Lysine 0.217mg 0.039mg Cauliflower
Methionine 0.02mg 0.002mg Cauliflower
Phenylalanine 0.065mg 0.025mg Cauliflower
Valine 0.125mg 0.021mg Cauliflower
Histidine 0.056mg 0.014mg Cauliflower
Fructose 0.97g 1.29g 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
Cauliflower Onion
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
30%
Cauliflower
8%
Onion
Minerals Daily Need Coverage Score
13%
Cauliflower
8%
Onion

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