Comparing Nutrients in 500 calories Onions VS Tomatoes

Weight per 500 calories

• Onions: 1250g
• Tomatoes: 2778g

Onions have 2.2 times more energy per 100g than Tomatoes. It has low energy density when compared to other foods. Raw Ripe Red Tomatoes having very low energy density.

Which food has more nutrients per 500 calories - Onions or Tomatoes?

Macros Ratio

	Protein	Fat	Carbs
Onions	10%	2%	88%
Tomatoes	17%	9%	74%

Macro Nutrients

	Onions	Tomatoes	Recommended Dietary Allowance
Energy	17.2% 500kcal	17.2% 500kcal	2900kcal per day for Men 19-50 years
Fat	1.3% 1.25g	5.73% 5.56g	97g per day for Men 19-50 years
Saturated Fat	1.64% 0.53g	2.43% 0.78g	32g per day for Men 19-50 years
Omega 3	3.13% 0.05g	5.2% 0.083g	1.6g per day for Men 19-50 years
Omega 6	0.96% 0.16g	13% 2.22g	17g per day for Men 19-50 years
Cholesterol	0% 0mg	0% 0mg	290mg per day for Men 19-50 years
Carbohydrate	90% 117g	83% 108g	130g per day for Men 19-50 years
Sugars	73% 53g	101% 73g	72.5g per day for Men 19-50 years	Limit added sugars in the diet to less than 10% of total calories [Guidelines 2020]
Fructose	22.2% 16g	52.5% 38g	72.5g per day for Men 19-50 years	≤50g/day or ~10% of energy has no deleterious effect on lipid and glucose control and of ≤100g/day does not influence body weight[PMC2991323]
Glucose	% 24.6g	% 34.7g	g per day for Men 19-50 years
Sucrose	% 12.4g	% 0g	g per day for Men 19-50 years
Fiber	56% 21.3g	87.7% 33.3g	38g per day for Men 19-50 years
Protein	24.6% 13.8g	43.7% 24.4g	56g per day for Men 19-50 years

Vitamins

	Onions	Tomatoes	Recommended Dietary Allowance
Vitamin A	0% 0μg	130% 1167μg	900μg per day for Men 19-50 years	RAE, retinol activity equivalents
Vitamin B1	48% 0.58mg	85.6% 1.03mg	1.2mg per day for Men 19-50 years	Thiamine
Vitamin B2	26% 0.34mg	40.6% 0.53mg	1.3mg per day for Men 19-50 years	Riboflavin
Vitamin B3	9.06% 1.45mg	103% 16.5mg	16mg per day for Men 19-50 years	Niacin, nicotinic acid, niacinamide
Vitamin B5	30.8% 1.54mg	49.4% 2.47mg	5mg per day for Men 19-50 years	Pantothenic acid
Vitamin B6	115% 1.5mg	171% 2.22mg	1.3mg per day for Men 19-50 years	Pyridoxine
Vitamin B7	NA	43.4% 13μg	30μg per day for Men 19-50 years	Biotin
Vitamin B9	59.4% 238μg	104% 417μg	400μg per day for Men 19-50 years	Folates and Folic Acid
Vitamin B12	0% 0μg	0% 0μg	2.4μg per day for Men 19-50 years	Cobalamin
Vitamin C	103% 93mg	423% 381mg	90mg per day for Men 19-50 years	Ascorbic acid
Vitamin D	0% 0IU	0% 0IU	600IU per day for Men 19-50 years	Calciferol, cholecalciferol, ergocalciferol
Vitamin E	1.67% 0.25mg	100% 15mg	15mg per day for Men 19-50 years	Tocopherols and Tocotrienols
Vitamin K	4.17% 5μg	183% 219μg	120μg per day for Men 19-50 years	Phytomenadione or phylloquinone

Minerals

	Onions	Tomatoes	Recommended Dietary Allowance
Calcium	28.8% 288mg	27.8% 278mg	1000mg per day for Men 19-50 years
Copper	54% 0.49mg	182% 1.64mg	0.9mg per day for Men 19-50 years
Fluoride	0.34% 13.8μg	1.6% 64μg	4000μg per day for Men 19-50 years	Fluoride is a mineral that helps prevent tooth decay and helps keep your bones strong. [RDA]
Iron	33% 2.63mg	94% 7.5mg	8mg per day for Men 19-50 years
Magnesium	29.8% 125mg	72.8% 306mg	420mg per day for Men 19-50 years
Manganese	70% 1.6mg	138% 3.17mg	2.3mg per day for Men 19-50 years
Molybdenum	NA	NA	45μg per day for Men 19-50 years	Molybdenum is an essential trace element that is naturally present in many foods [RDA]
Phosphorus	51.8% 363mg	95% 667mg	700mg per day for Men 19-50 years
Potassium	53.7% 1825mg	194% 6583mg	3400mg per day for Men 19-50 years
Selenium	11.4% 6.25μg	0% 0μg	55μg per day for Men 19-50 years
Sodium	3.33% 50mg	9.26% 139mg	1500mg per day for Men 19-50 years
Zinc	19.3% 2.13mg	43% 4.72mg	11mg per day for Men 19-50 years
Water	30% 1114g	71% 2626g	3700g per day for Men 19-50 years

Lets compare vitamin content per 500 calories of Onions vs Tomatoes:

• Raw Ripe Red Tomatoes contain more Vitamin A, 1.8 times more Vitamin B1, 1.6 times more Vitamin B2, 11.4 times more Vitamin B3, 1.6 times more Vitamin B5, 1.5 times more Vitamin B6, 1.8 times more Vitamin B9, 4.1 times more Vitamin C, 60 times more Vitamin E and 43.9 times more Vitamin K than Raw Onions.
• Both Raw Onions as well as Raw Ripe Red Tomatoes have insufficient amounts of Vitamin B12 and Vitamin D in 500 kcal.

Comparing minerals per 500 calories for Onions vs Tomatoes:

• Raw Onions have more Selenium than Raw Ripe Red Tomatoes.
• While Raw Ripe Red Tomatoes contain 3.4 times more Copper, 2.9 times more Iron, 2.4 times more Magnesium, 2 times more Manganese, 1.8 times more Phosphorus, 3.6 times more Potassium, 2.8 times more Sodium, 2.2 times more Zinc and 2.4 times more Water than Raw Onions.
• Both Raw Onions and Raw Ripe Red Tomatoes have similar amounts of Calcium per 500 kcal.
• Both Raw Onions as well as Raw Ripe Red Tomatoes have insufficient amounts of Fluoride in 500 kcal.

Comparison of macro-nutrients per 500 calories:

• Raw Ripe Red Tomatoes contain 4.4 times more Fat, 1.7 times more Omega 3, 13.7 times more Omega 6, 1.4 times more Sugars, 2.4 times more Fructose, 1.6 times more Fiber and 1.8 times more Protein than Raw Onions.
• Both Raw Onions and Raw Ripe Red Tomatoes have similar amounts of Energy and Carbohydrate per 500 kcal.
• Both Raw Onions as well as Raw Ripe Red Tomatoes have insufficient amounts of Cholesterol, Glucose and Sucrose in 500 kcal.