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Onion vs. Asparagus — In-Depth Nutrition Comparison

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Summary of differences between Onion and Asparagus

  • The amount of Vitamin K, Iron, Copper, Vitamin B2, Folate, Vitamin B1, Vitamin E, and Vitamin B3 in Asparagus is higher than in Onion.
  • Asparagus covers your daily need of Vitamin K 34% more than Onion.

These are the specific foods used in this comparison Onions, raw and Asparagus, raw.

Infographic

Onion vs Asparagus 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
0
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 10% 7.2% 18% 80% 63% 15% 22% 0.26% 21% 13%
Contains more MagnesiumMagnesium +40%
Contains more PotassiumPotassium +38.4%
Contains more IronIron +919%
Contains more CopperCopper +384.6%
Contains more ZincZinc +217.6%
Contains more PhosphorusPhosphorus +79.3%
Contains less SodiumSodium -50%
Contains more ManganeseManganese +22.5%
Contains more SeleniumSelenium +360%
~equal in Calcium ~24mg

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
2
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 19% 45% 23% 0% 36% 33% 18% 16% 21% 0% 104% 39% 8.7%
Contains more Vitamin CVitamin C +32.1%
Contains more Vitamin B6Vitamin B6 +31.9%
Contains more Vitamin AVitamin A +37700%
Contains more Vitamin EVitamin E +5550%
Contains more Vitamin B1Vitamin B1 +210.9%
Contains more Vitamin B2Vitamin B2 +422.2%
Contains more Vitamin B3Vitamin B3 +743.1%
Contains more Vitamin B5Vitamin B5 +122.8%
Contains more Vitamin KVitamin K +10300%
Contains more FolateFolate +173.7%
Contains more CholineCholine +162.3%
~equal in Vitamin D ~0µg
~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% 4% 93%
Protein: 2.2 g
Fats: 0.12 g
Carbs: 3.88 g
Water: 93.22 g
Other: 0.58 g
Contains more CarbsCarbs +140.7%
Contains more ProteinProtein +100%
Contains more FatsFats +20%
Contains more OtherOther +65.7%
~equal in Water ~93.22g

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
44% 56%
Saturated Fat: Sat. Fat 0.04 g
Monounsaturated Fat: Mono. Fat 0 g
Polyunsaturated fat: Poly. Fat 0.05 g
Contains more Mono. FatMonounsaturated Fat +∞%
Contains more Poly. FatPolyunsaturated fat +194.1%
~equal in Saturated Fat ~0.04g

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
12% 35% 53%
Starch: 0 g
Sucrose: 0.23 g
Glucose: 0.65 g
Fructose: 1 g
Lactose: 0 g
Maltose: 0 g
Galactose: 0 g
Contains more SucroseSucrose +330.4%
Contains more GlucoseGlucose +203.1%
Contains more FructoseFructose +29%
~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 Asparagus
Lower in Glycemic Index ok
Lower in price ok
Lower in Sugar ok
Lower in Sodium ok
Lower in Saturated Fat ok
Rich in minerals ok
Rich in vitamins ok
Lower in Cholesterol Equal

All nutrients comparison - raw data values

Nutrient Onion Asparagus Opinion
Calories 40kcal 20kcal Onion
Protein 1.1g 2.2g Asparagus
Fats 0.1g 0.12g Asparagus
Vitamin C 7.4mg 5.6mg Onion
Net carbs 7.64g 1.78g Onion
Carbs 9.34g 3.88g Onion
Magnesium 10mg 14mg Asparagus
Calcium 23mg 24mg Asparagus
Potassium 146mg 202mg Asparagus
Iron 0.21mg 2.14mg Asparagus
Sugar 4.24g 1.88g Asparagus
Fiber 1.7g 2.1g Asparagus
Copper 0.039mg 0.189mg Asparagus
Zinc 0.17mg 0.54mg Asparagus
Phosphorus 29mg 52mg Asparagus
Sodium 4mg 2mg Asparagus
Vitamin A 2IU 756IU Asparagus
Vitamin A 0µg 38µg Asparagus
Vitamin E 0.02mg 1.13mg Asparagus
Manganese 0.129mg 0.158mg Asparagus
Selenium 0.5µg 2.3µg Asparagus
Vitamin B1 0.046mg 0.143mg Asparagus
Vitamin B2 0.027mg 0.141mg Asparagus
Vitamin B3 0.116mg 0.978mg Asparagus
Vitamin B5 0.123mg 0.274mg Asparagus
Vitamin B6 0.12mg 0.091mg Onion
Vitamin K 0.4µg 41.6µg Asparagus
Folate 19µg 52µg Asparagus
Choline 6.1mg 16mg Asparagus
Saturated Fat 0.042g 0.04g Asparagus
Monounsaturated Fat 0.013g 0g Onion
Polyunsaturated fat 0.017g 0.05g Asparagus
Tryptophan 0.014mg 0.027mg Asparagus
Threonine 0.021mg 0.084mg Asparagus
Isoleucine 0.014mg 0.075mg Asparagus
Leucine 0.025mg 0.128mg Asparagus
Lysine 0.039mg 0.104mg Asparagus
Methionine 0.002mg 0.031mg Asparagus
Phenylalanine 0.025mg 0.075mg Asparagus
Valine 0.021mg 0.115mg Asparagus
Histidine 0.014mg 0.049mg Asparagus
Fructose 1.29g 1g Onion

Which food is preferable for your diet?

ok
ok
is better in case of low diet
Onion Asparagus
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
28%
Asparagus
Minerals Daily Need Coverage Score
8%
Onion
25%
Asparagus

Comparison summary

Which food is lower in glycemic index?
Onion
Onion is lower in glycemic index (difference - 17)
Which food is cheaper?
Onion
Onion is cheaper (difference - $3.8)
Which food is lower in Sugar?
Asparagus
Asparagus is lower in Sugar (difference - 2.36g)
Which food contains less Sodium?
Asparagus
Asparagus contains less Sodium (difference - 2mg)
Which food is lower in Saturated Fat?
Asparagus
Asparagus is lower in Saturated Fat (difference - 0.002g)
Which food is richer in minerals?
Asparagus
Asparagus is relatively richer in minerals
Which food is richer in vitamins?
Asparagus
Asparagus 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. Asparagus - https://fdc.nal.usda.gov/fdc-app.html#/food-details/168389/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.