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Sweet onion vs. Fennel — In-Depth Nutrition Comparison

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Differences between Sweet onion and Fennel

  • Sweet onion has more Vitamin B6, while Fennel has more Vitamin K, Fiber, Potassium, Vitamin C, Iron, and Vitamin A.
  • Fennel's daily need coverage for Vitamin K is 52% higher.
  • Fennel contains 3 times less Vitamin B6 than Sweet onion. Sweet onion contains 0.13mg of Vitamin B6, while Fennel contains 0.047mg.

The food types used in this comparison are Onions, sweet, raw and Fennel, bulb, raw.

Infographic

Sweet onion vs Fennel 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 6.4% 6% 11% 9.8% 19% 3.5% 12% 1% 9.9% 2.7%
Fennel
9
Magnesium Magnesium Calcium Calcium Potassium Potassium Iron Iron Copper Copper Zinc Zinc Phosphorus Phosphorus Sodium Sodium Manganese Manganese Selenium Selenium 12% 15% 37% 27% 22% 5.5% 21% 6.8% 25% 3.8%
Contains less SodiumSodium -84.6%
Contains more MagnesiumMagnesium +88.9%
Contains more CalciumCalcium +145%
Contains more PotassiumPotassium +247.9%
Contains more IronIron +180.8%
Contains more CopperCopper +17.9%
Contains more ZincZinc +53.8%
Contains more PhosphorusPhosphorus +85.2%
Contains more ManganeseManganese +151.3%
Contains more SeleniumSelenium +40%

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 16% 0.06% 0.4% 0% 10% 4.6% 2.5% 5.9% 30% 0% 0.75% 17% 3%
Fennel
9
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 40% 58% 12% 0% 2.5% 7.4% 12% 14% 11% 0% 157% 20% 7.2%
Contains more Vitamin B1Vitamin B1 +310%
Contains more Vitamin B6Vitamin B6 +176.6%
Contains more Vitamin CVitamin C +150%
Contains more Vitamin AVitamin A +96200%
Contains more Vitamin EVitamin E +2800%
Contains more Vitamin B2Vitamin B2 +60%
Contains more Vitamin B3Vitamin B3 +381.2%
Contains more Vitamin B5Vitamin B5 +136.7%
Contains more Vitamin KVitamin K +20833.3%
Contains more FolateFolate +17.4%
Contains more CholineCholine +140%
~equal in Vitamin D ~0µg
~equal in Vitamin B12 ~0µg

Macronutrient Comparison

Macronutrient breakdown side-by-side comparison
8% 91%
Protein: 0.8 g
Fats: 0.08 g
Carbs: 7.55 g
Water: 91.24 g
Other: 0.33 g
Fennel
3
7% 90%
Protein: 1.24 g
Fats: 0.2 g
Carbs: 7.3 g
Water: 90.21 g
Other: 1.05 g
Contains more ProteinProtein +55%
Contains more FatsFats +150%
Contains more OtherOther +218.2%
~equal in Carbs ~7.3g
~equal in Water ~90.21g

Comparison summary table

Pay attention to the rightmost column. It displays the amounts side by side, giving a clearer understanding of the difference.
Sweet onion Fennel
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 Sweet onion Fennel Opinion
Calories 32kcal 31kcal Sweet onion
Protein 0.8g 1.24g Fennel
Fats 0.08g 0.2g Fennel
Vitamin C 4.8mg 12mg Fennel
Net carbs 6.65g 4.2g Sweet onion
Carbs 7.55g 7.3g Sweet onion
Magnesium 9mg 17mg Fennel
Calcium 20mg 49mg Fennel
Potassium 119mg 414mg Fennel
Iron 0.26mg 0.73mg Fennel
Sugar 5.02g 3.93g Fennel
Fiber 0.9g 3.1g Fennel
Copper 0.056mg 0.066mg Fennel
Zinc 0.13mg 0.2mg Fennel
Phosphorus 27mg 50mg Fennel
Sodium 8mg 52mg Sweet onion
Vitamin A 1IU 963IU Fennel
Vitamin A 0µg 48µg Fennel
Vitamin E 0.02mg 0.58mg Fennel
Manganese 0.076mg 0.191mg Fennel
Selenium 0.5µg 0.7µg Fennel
Vitamin B1 0.041mg 0.01mg Sweet onion
Vitamin B2 0.02mg 0.032mg Fennel
Vitamin B3 0.133mg 0.64mg Fennel
Vitamin B5 0.098mg 0.232mg Fennel
Vitamin B6 0.13mg 0.047mg Sweet onion
Vitamin K 0.3µg 62.8µg Fennel
Folate 23µg 27µg Fennel
Choline 5.5mg 13.2mg Fennel
Saturated Fat 0.09g Sweet onion
Monounsaturated Fat 0.068g Fennel
Polyunsaturated fat 0.169g Fennel
Tryptophan 0.009mg Sweet onion
Threonine 0.018mg Sweet onion
Isoleucine 0.014mg Sweet onion
Leucine 0.025mg Sweet onion
Lysine 0.033mg Sweet onion
Methionine 0.009mg Sweet onion
Phenylalanine 0.024mg Sweet onion
Valine 0.02mg Sweet onion
Histidine 0.011mg Sweet onion
Fructose 2.02g Sweet onion

Which food is preferable for your diet?

ok
ok
is better in case of low diet
Sweet onion Fennel
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
7%
Sweet onion
26%
Fennel
Minerals Daily Need Coverage Score
8%
Sweet onion
18%
Fennel

Comparison summary

Which food contains less Sodium?
Sweet onion
Sweet onion contains less Sodium (difference - 44mg)
Which food is lower in Saturated Fat?
Sweet onion
Sweet onion is lower in Saturated Fat (difference - 0.09g)
Which food is lower in glycemic index?
Sweet onion
Sweet onion is lower in glycemic index (difference - 45)
Which food is cheaper?
Sweet onion
Sweet onion is cheaper (difference - $0.2)
Which food is lower in Sugar?
Fennel
Fennel is lower in Sugar (difference - 1.09g)
Which food is richer in minerals?
Fennel
Fennel is relatively richer in minerals
Which food is richer in vitamins?
Fennel
Fennel 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. Sweet onion - https://fdc.nal.usda.gov/fdc-app.html#/food-details/170008/nutrients
  2. Fennel - https://fdc.nal.usda.gov/fdc-app.html#/food-details/169385/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.