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  6. Tomato vs. Sweet onion

Tomato vs. Sweet onion — In-Depth Nutrition Comparison

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Summary of differences between Tomato and Sweet onion

  • Sweet onion has less Vitamin C, and Vitamin K than Tomato.
  • Tomato has 27 times more Vitamin E than Sweet onion. While Tomato has 0.54mg of Vitamin E , Sweet onion has only 0.02mg.
  • Tomato has less Sugar.

These are the specific foods used in this comparison Tomatoes, red, ripe, raw, year round average and Onions, sweet, raw.

Infographic

Tomato vs Sweet 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.
Tomato
Tomato
7
:
3
Sweet onion
Sweet onion
Contains more Magnesium +22.2%
Contains more Potassium +99.2%
Contains less Sodium -37.5%
Contains more Zinc +30.8%
Contains more Manganese +50%
Contains more Calcium +100%
Contains more Phosphorus +12.5%
Contains more Selenium +∞%
Equal in Iron - 0.26
Equal in Copper - 0.056
Tomato
Calcium Iron Magnesium Phosphorus Potassium Sodium Zinc Copper Manganese Selenium 3% 11% 8% 11% 21% 1% 5% 20% 15% 0%
Sweet onion
Calcium Iron Magnesium Phosphorus Potassium Sodium Zinc Copper Manganese Selenium 6% 10% 7% 12% 11% 2% 4% 19% 10% 3%
Contains more Magnesium +22.2%
Contains more Potassium +99.2%
Contains less Sodium -37.5%
Contains more Zinc +30.8%
Contains more Manganese +50%
Contains more Calcium +100%
Contains more Phosphorus +12.5%
Contains more Selenium +∞%
Equal in Iron - 0.26
Equal in Copper - 0.056

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.
Tomato
Tomato
6
:
5
Sweet onion
Sweet onion
Contains more Vitamin A +83200%
Contains more Vitamin E +2600%
Contains more Vitamin C +185.4%
Contains more Vitamin B3 +346.6%
Contains more Vitamin K +2533.3%
Contains more Vitamin B1 +10.8%
Contains more Vitamin B5 +10.1%
Contains more Vitamin B6 +62.5%
Contains more Folate +53.3%
Equal in Vitamin B2 - 0.02
Tomato
Vitamin A Vitamin E Vitamin D Vitamin C Vitamin B1 Vitamin B2 Vitamin B3 Vitamin B5 Vitamin B6 Folate Vitamin B12 Vitamin K 50% 11% 0% 46% 10% 5% 12% 6% 19% 12% 0% 20%
Sweet 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% 16% 11% 5% 3% 6% 30% 18% 0% 1%
Contains more Vitamin A +83200%
Contains more Vitamin E +2600%
Contains more Vitamin C +185.4%
Contains more Vitamin B3 +346.6%
Contains more Vitamin K +2533.3%
Contains more Vitamin B1 +10.8%
Contains more Vitamin B5 +10.1%
Contains more Vitamin B6 +62.5%
Contains more Folate +53.3%
Equal in Vitamin B2 - 0.02

Macronutrient Comparison

Macronutrient breakdown side-by-side comparison
Tomato
Tomato
4
:
1
Sweet onion
Sweet onion
Contains more Fats +150%
Contains more Other +54.5%
Contains more Carbs +94.1%
Equal in Protein - 0.8
Equal in Water - 91.24
Tomato
4% 95%
Protein: 0.88 g
Fats: 0.2 g
Carbs: 3.89 g
Water: 94.52 g
Other: 0.51 g
Sweet onion
8% 91%
Protein: 0.8 g
Fats: 0.08 g
Carbs: 7.55 g
Water: 91.24 g
Other: 0.33 g
Contains more Fats +150%
Contains more Other +54.5%
Contains more Carbs +94.1%
Equal in Protein - 0.8
Equal in Water - 91.24

Carbohydrate type comparison

Carbohydrate type breakdown side-by-side comparison
Tomato
Tomato
0
:
4
Sweet onion
Sweet onion
Contains more Sucrose +∞%
Contains more Glucose +80.8%
Contains more Fructose +47.4%
Contains more Lactose +∞%
Tomato
48% 52%
Starch: 0 g
Sucrose: 0 g
Glucose: 1.25 g
Fructose: 1.37 g
Lactose: 0 g
Maltose: 0 g
Galactose: 0 g
Sweet onion
14% 45% 40%
Starch: 0 g
Sucrose: 0.72 g
Glucose: 2.26 g
Fructose: 2.02 g
Lactose: 0.02 g
Maltose: 0 g
Galactose: 0 g
Contains more Sucrose +∞%
Contains more Glucose +80.8%
Contains more Fructose +47.4%
Contains more Lactose +∞%

Comparison summary table

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

All nutrients comparison - raw data values

Nutrient Tomato Sweet onion Opinion
Net carbs 2.69g 6.65g Sweet onion
Protein 0.88g 0.8g Tomato
Fats 0.2g 0.08g Tomato
Carbs 3.89g 7.55g Sweet onion
Calories 18kcal 32kcal Sweet onion
Fructose 1.37g 2.02g Sweet onion
Sugar 2.63g 5.02g Tomato
Fiber 1.2g 0.9g Tomato
Calcium 10mg 20mg Sweet onion
Iron 0.27mg 0.26mg Tomato
Magnesium 11mg 9mg Tomato
Phosphorus 24mg 27mg Sweet onion
Potassium 237mg 119mg Tomato
Sodium 5mg 8mg Tomato
Zinc 0.17mg 0.13mg Tomato
Copper 0.059mg 0.056mg Tomato
Manganese 0.114mg 0.076mg Tomato
Selenium 0µg 0.5µg Sweet onion
Vitamin A 833IU 1IU Tomato
Vitamin A RAE 42µg 0µg Tomato
Vitamin E 0.54mg 0.02mg Tomato
Vitamin C 13.7mg 4.8mg Tomato
Vitamin B1 0.037mg 0.041mg Sweet onion
Vitamin B2 0.019mg 0.02mg Sweet onion
Vitamin B3 0.594mg 0.133mg Tomato
Vitamin B5 0.089mg 0.098mg Sweet onion
Vitamin B6 0.08mg 0.13mg Sweet onion
Folate 15µg 23µg Sweet onion
Vitamin K 7.9µg 0.3µg Tomato
Tryptophan 0.006mg 0.009mg Sweet onion
Threonine 0.027mg 0.018mg Tomato
Isoleucine 0.018mg 0.014mg Tomato
Leucine 0.025mg 0.025mg
Lysine 0.027mg 0.033mg Sweet onion
Methionine 0.006mg 0.009mg Sweet onion
Phenylalanine 0.027mg 0.024mg Tomato
Valine 0.018mg 0.02mg Sweet onion
Histidine 0.014mg 0.011mg Tomato
Saturated Fat 0.028g Sweet onion
Monounsaturated Fat 0.031g Tomato
Polyunsaturated fat 0.083g Tomato

Which food is preferable for your diet?

ok
ok
is better in case of low diet
Tomato Sweet 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
16%
Tomato
7%
Sweet onion
Minerals Daily Need Coverage Score
9%
Tomato
8%
Sweet onion

Comparison summary

Which food is lower in Sugar?
Tomato
Tomato is lower in Sugar (difference - 2.39g)
Which food contains less Sodium?
Tomato
Tomato contains less Sodium (difference - 3mg)
Which food is lower in Saturated Fat?
Sweet onion
Sweet onion is lower in Saturated Fat (difference - 0.028g)
Which food is lower in glycemic index?
Sweet onion
Sweet onion is lower in glycemic index (difference - 23)
Which food is cheaper?
Sweet onion
Sweet onion is cheaper (difference - $0.4)
Which food contains less Cholesterol?
?
The foods are relatively equal in Cholesterol (0 mg)
Which food is richer in minerals?
?
It cannot be stated which food is richer in vitamins. See the charts below for detailed information. See the charts below for detailed information. See the charts below for detailed information.
Which food is richer in vitamins?
?
It cannot be stated which food is richer in vitamins. See the charts below for detailed information. See the charts below for detailed information. See the charts below for detailed information.

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. Tomato - https://fdc.nal.usda.gov/fdc-app.html#/food-details/170457/nutrients
  2. Sweet onion - https://fdc.nal.usda.gov/fdc-app.html#/food-details/170008/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.