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

How healthy is kale?

Is kale healthy? Yes, for most people. Kale scores 98/100 on the HowHealthyIs Score: 100 g provides 35 kcal, 93 mg vitamin C and 241 µg vitamin A. It is rich in vitamins A, C and K and is one of the better plant sources of calcium you can actually absorb. Source: USDA FoodData Central.

  • High in vitamin C
  • High in calcium
  • Low calorie
Score explained

The score compares nutrient density per 100 kcal across every food we cover (NRF9.3 method). Kale ranks higher than 98% of them.

Counts in favor (% daily value per 100 kcal)

  • Vitamin C100%
  • Vitamin A77%
  • Calcium56%
  • Fiber42%
  • Iron25%
  • Magnesium22%
  • Potassium21%
  • Protein17%
  • Vitamin E13%

Counts against

  • Saturated fat3%
  • Added sugars0%
  • Sodium7%

Raw NRF9.3: 372 minus 9 = 363. 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 kale?

Calories7kcal
Protein0.6g
Carbohydrates0.9g
Fat0.3g
Fiber0.9g
Sugars0.2g
Nutrition facts for kale. Per 100 g and for the selected portion (21 g). %DV uses FDA Daily Values.
NutrientPer 100 gPer portion%DV
Energy and macronutrients
Calories35 kcal7 kcal
Protein2.9 g0.6 g1%
Carbohydrates4.4 g0.9 g0%
Fiber4.1 g0.9 g3%
Sugars1 g0.2 g
Added sugars0 g0 g0%
Fat1.5 g0.3 g0%
Saturated fat0.2 g<0.1 g0%
Vitamins
Vitamin A241 µg51 µg6%
Vitamin C93 mg20 mg22%
Vitamin E0.7 mg0.1 mg1%
Minerals
Calcium254 mg53 mg4%
Iron1.6 mg0.3 mg2%
Potassium348 mg73 mg2%
Magnesium33 mg6.9 mg2%
Sodium53 mg11 mg0%

Source: USDA FoodData Central, "Kale, raw" (FDC 168421). Values rounded.

Why is kale good for you?

  • 20 mg vitamin C in 1 cup chopped, 22% of the daily value. Vitamin C contributes to the normal function of the immune system.

Good ways to use it

  • Salads (massage it with a little oil and lemon)
  • Soups, stews and smoothies

What should you watch out for?

  • Very high in vitamin K. If you take warfarin, aim for a consistent amount week to week.

Similar foods

Kale is already one of the most nutrient-dense vegetables we cover.

How does kale compare?

Common questions about kale

How many calories are in kale?
100 g of kale has 35 kcal. A typical portion, 1 cup chopped (21 g), has about 7 kcal.
How much protein is in kale?
Kale has 2.9 g of protein per 100 g, or about 0.6 g in 1 cup chopped.
Is kale good for weight loss?
Kale is low in calories (35 kcal per 100 g), so it adds 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: "Kale, raw", FDC ID 168421. 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.