Early version. Nutrient values from USDA FoodData Central; dietitian review in progress. Not medical advice.

How healthy are tomatoes?

Are tomatoes healthy? Yes, for most people. Tomatoes score 91/100 on the HowHealthyIs Score: 100 g provide 18 kcal, 14 mg vitamin C and 237 mg potassium. They are very low in calories and add vitamin C, potassium and lycopene, which is better absorbed from cooked tomatoes. Source: USDA FoodData Central.

  • Source of vitamin C
  • Low calorie
Score explained

The score compares nutrient density per 100 kcal across every food we cover (NRF9.3 method). Tomatoes rank higher than 91% of them.

Counts in favor (% daily value per 100 kcal)

  • Vitamin C76%
  • Potassium25%
  • Vitamin A23%
  • Fiber21%
  • Vitamin E18%
  • Magnesium13%
  • Protein9%
  • Iron8%
  • Calcium4%

Counts against

  • Saturated fat1%
  • Added sugars0%
  • Sodium1%

Raw NRF9.3: 197 minus 2 = 196. The score is not a verdict on whether to eat a food; portion, the whole meal and your own health matter more. Full methodology

How many calories are in tomatoes?

Calories22kcal
Protein1.1g
Carbohydrates4.8g
Fat0.2g
Fiber1.5g
Sugars3.2g
Nutrition facts for tomatoes. Per 100 g and for the selected portion (123 g). %DV uses FDA Daily Values.
NutrientPer 100 gPer portion%DV
Energy and macronutrients
Calories18 kcal22 kcal
Protein0.9 g1.1 g2%
Carbohydrates3.9 g4.8 g2%
Fiber1.2 g1.5 g5%
Sugars2.6 g3.2 g
Added sugars0 g0 g0%
Fat0.2 g0.2 g0%
Saturated fat<0.1 g<0.1 g0%
Vitamins
Vitamin A42 µg52 µg6%
Vitamin C14 mg17 mg19%
Vitamin E0.5 mg0.7 mg4%
Minerals
Calcium10 mg12 mg1%
Iron0.3 mg0.3 mg2%
Potassium237 mg292 mg6%
Magnesium11 mg14 mg3%
Sodium5 mg6.2 mg0%

Source: USDA FoodData Central, "Tomatoes, red, ripe, raw, year round average" (FDC 170457). Values rounded.

Why are tomatoes good for you?

  • 17 mg vitamin C in 1 medium tomato, 19% of the daily value. Vitamin C contributes to the normal function of the immune system.

Good ways to use them

  • Salads and sandwiches
  • Cooked sauces, where lycopene is more available

What should you watch out for?

  • Store-bought sauces and soups can be high in salt and added sugar; check the label.

Which vegetables score higher?

Other vegetables with more nutrition per calorie. Variety matters more than picking one winner.

How do tomatoes compare?

Common questions about tomatoes

How many calories are in tomatoes?
100 g of tomatoes has 18 kcal. A typical portion, 1 medium tomato (123 g), has about 22 kcal.
How much protein is in tomatoes?
Tomatoes have 0.9 g of protein per 100 g, or about 1.1 g in 1 medium tomato.
Are tomatoes good for weight loss?
Tomatoes are low in calories (18 kcal per 100 g), so they add volume to meals without many calories. No single food causes weight loss; the overall diet does.

Sources

  1. U.S. Department of Agriculture. FoodData Central, SR Legacy: "Tomatoes, red, ripe, raw, year round average", FDC ID 170457. fdc.nal.usda.gov
  2. U.S. Food and Drug Administration. Daily Value on the Nutrition and Supplement Facts Labels (21 CFR 101.9).
  3. Fulgoni VL, Keast DR, Drewnowski A. Development and validation of the Nutrient-Rich Foods Index. J Nutr. 2009;139(8):1549-1554.
  4. Monteiro CA, et al. Ultra-processed foods: what they are and how to identify them. Public Health Nutr. 2019;22(5):936-941.

Review and updates

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More: Vegetables ranked, foods high in vitamin C.