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  6. Bell pepper vs. Onion

Bell pepper vs. Onion — In-Depth Nutrition Comparison

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A recap on differences between Bell pepper and Onion

  • Onion has less Vitamin C, Vitamin B6, and Vitamin K.
  • Bell pepper covers your daily Vitamin C needs 81% more than Onion.
  • Onion contains 19 times less Vitamin K than Bell pepper. Bell pepper contains 7.4µg of Vitamin K, while Onion contains 0.4µg.
  • Bell pepper has less Sugar.

Food varieties used in this article are Peppers, sweet, green, raw and Onions, raw.

Infographic

Bell pepper vs Onion infographic
Infographic link

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.
Bell pepper
Bell pepper
4
:
5
Onion
Onion
Contains more Iron +61.9%
Contains more Potassium +19.9%
Contains less Sodium -25%
Contains more Copper +69.2%
Contains more Calcium +130%
Contains more Phosphorus +45%
Contains more Zinc +30.8%
Contains more Selenium +∞%
Equal in Magnesium - 10
Equal in Manganese - 0.129
Bell pepper
Calcium Iron Magnesium Phosphorus Potassium Sodium Zinc Copper Manganese Selenium 3% 13% 8% 9% 16% 1% 4% 22% 16% 0%
Onion
Calcium Iron Magnesium Phosphorus Potassium Sodium Zinc Copper Manganese Selenium 7% 8% 8% 13% 13% 1% 5% 14% 17% 3%
Contains more Iron +61.9%
Contains more Potassium +19.9%
Contains less Sodium -25%
Contains more Copper +69.2%
Contains more Calcium +130%
Contains more Phosphorus +45%
Contains more Zinc +30.8%
Contains more Selenium +∞%
Equal in Magnesium - 10
Equal in Manganese - 0.129

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.
Bell pepper
Bell pepper
8
:
2
Onion
Onion
Contains more Vitamin A +18400%
Contains more Vitamin E +1750%
Contains more Vitamin C +986.5%
Contains more Vitamin B1 +23.9%
Contains more Vitamin B3 +313.8%
Contains more Vitamin B6 +86.7%
Contains more Vitamin K +1750%
Contains more Vitamin B5 +24.2%
Contains more Folate +90%
Equal in Vitamin B2 - 0.027
Bell pepper
Vitamin A Vitamin E Vitamin D Vitamin C Vitamin B1 Vitamin B2 Vitamin B3 Vitamin B5 Vitamin B6 Folate Vitamin B12 Vitamin K 23% 8% 0% 268% 15% 7% 9% 6% 52% 8% 0% 19%
Onion
Vitamin A Vitamin E Vitamin D Vitamin C Vitamin B1 Vitamin B2 Vitamin B3 Vitamin B5 Vitamin B6 Folate Vitamin B12 Vitamin K 1% 1% 0% 25% 12% 7% 3% 8% 28% 15% 0% 1%
Contains more Vitamin A +18400%
Contains more Vitamin E +1750%
Contains more Vitamin C +986.5%
Contains more Vitamin B1 +23.9%
Contains more Vitamin B3 +313.8%
Contains more Vitamin B6 +86.7%
Contains more Vitamin K +1750%
Contains more Vitamin B5 +24.2%
Contains more Folate +90%
Equal in Vitamin B2 - 0.027

Macronutrient Comparison

Macronutrient breakdown side-by-side comparison
Bell pepper
Bell pepper
3
:
2
Onion
Onion
Contains more Fats +70%
Contains more Other +25.7%
Contains more Protein +27.9%
Contains more Carbs +101.3%
Equal in Water - 89.11
Bell pepper
5% 94%
Protein: 0.86 g
Fats: 0.17 g
Carbs: 4.64 g
Water: 93.89 g
Other: 0.44 g
Onion
9% 89%
Protein: 1.1 g
Fats: 0.1 g
Carbs: 9.34 g
Water: 89.11 g
Other: 0.35 g
Contains more Fats +70%
Contains more Other +25.7%
Contains more Protein +27.9%
Contains more Carbs +101.3%
Equal in Water - 89.11

Fat Type Comparison

Fat type breakdown side-by-side comparison
Bell pepper
Bell pepper
1
:
2
Onion
Onion
Contains more Polyunsaturated fat +264.7%
Contains less Saturated Fat -27.6%
Contains more Monounsaturated Fat +62.5%
Bell pepper
45% 6% 48%
Saturated Fat: 0.058 g
Monounsaturated Fat: 0.008 g
Polyunsaturated fat: 0.062 g
Onion
58% 18% 24%
Saturated Fat: 0.042 g
Monounsaturated Fat: 0.013 g
Polyunsaturated fat: 0.017 g
Contains more Polyunsaturated fat +264.7%
Contains less Saturated Fat -27.6%
Contains more Monounsaturated Fat +62.5%

Carbohydrate type comparison

Carbohydrate type breakdown side-by-side comparison
Bell pepper
Bell pepper
0
:
3
Onion
Onion
Contains more Sucrose +800%
Contains more Glucose +69.8%
Contains more Fructose +15.2%
Bell pepper
5% 49% 47%
Starch: 0 g
Sucrose: 0.11 g
Glucose: 1.16 g
Fructose: 1.12 g
Lactose: 0 g
Maltose: 0 g
Galactose: 0 g
Onion
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 Sucrose +800%
Contains more Glucose +69.8%
Contains more Fructose +15.2%

Comparison summary table

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

All nutrients comparison - raw data values

Nutrient Bell pepper Onion Opinion
Net carbs 2.94g 7.64g Onion
Protein 0.86g 1.1g Onion
Fats 0.17g 0.1g Bell pepper
Carbs 4.64g 9.34g Onion
Calories 20kcal 40kcal Onion
Fructose 1.12g 1.29g Onion
Sugar 2.4g 4.24g Bell pepper
Fiber 1.7g 1.7g
Calcium 10mg 23mg Onion
Iron 0.34mg 0.21mg Bell pepper
Magnesium 10mg 10mg
Phosphorus 20mg 29mg Onion
Potassium 175mg 146mg Bell pepper
Sodium 3mg 4mg Bell pepper
Zinc 0.13mg 0.17mg Onion
Copper 0.066mg 0.039mg Bell pepper
Manganese 0.122mg 0.129mg Onion
Selenium 0µg 0.5µg Onion
Vitamin A 370IU 2IU Bell pepper
Vitamin A RAE 18µg 0µg Bell pepper
Vitamin E 0.37mg 0.02mg Bell pepper
Vitamin C 80.4mg 7.4mg Bell pepper
Vitamin B1 0.057mg 0.046mg Bell pepper
Vitamin B2 0.028mg 0.027mg Bell pepper
Vitamin B3 0.48mg 0.116mg Bell pepper
Vitamin B5 0.099mg 0.123mg Onion
Vitamin B6 0.224mg 0.12mg Bell pepper
Folate 10µg 19µg Onion
Vitamin K 7.4µg 0.4µg Bell pepper
Tryptophan 0.012mg 0.014mg Onion
Threonine 0.036mg 0.021mg Bell pepper
Isoleucine 0.024mg 0.014mg Bell pepper
Leucine 0.036mg 0.025mg Bell pepper
Lysine 0.039mg 0.039mg
Methionine 0.007mg 0.002mg Bell pepper
Phenylalanine 0.092mg 0.025mg Bell pepper
Valine 0.036mg 0.021mg Bell pepper
Histidine 0.01mg 0.014mg Onion
Saturated Fat 0.058g 0.042g Onion
Monounsaturated Fat 0.008g 0.013g Onion
Polyunsaturated fat 0.062g 0.017g Bell pepper

Which food is preferable for your diet?

ok
ok
is better in case of low diet
Bell pepper Onion
Low Fats diet ok
Low Carbs diet ok
Low Calories 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
34%
Bell pepper
8%
Onion
Minerals Daily Need Coverage Score
9%
Bell pepper
8%
Onion

Comparison summary

Which food is lower in Saturated Fat?
Onion
Onion is lower in Saturated Fat (difference - 0.016g)
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 - $0.1)
Which food is richer in minerals?
Onion
Onion is relatively richer in minerals
Which food is lower in Sugar?
Bell pepper
Bell pepper is lower in Sugar (difference - 1.84g)
Which food contains less Sodium?
Bell pepper
Bell pepper contains less Sodium (difference - 1mg)
Which food is richer in vitamins?
Bell pepper
Bell pepper 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. Bell pepper - https://fdc.nal.usda.gov/fdc-app.html#/food-details/170427/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.