A closer look at a familiar choice

Spinach vs. Kale

Per 100 g, raw spinach has 23 calories and 2.9 g protein; raw kale has 35 calories and 2.9 g protein. Change the basis to see the tradeoffs.

Choose a fair basis
ASpinach100 g · USDA SR Legacy
vs.
BKale100 g · USDA Foundation
NutrientSpinachKale
Calorieskcal2335
Proteing2.92.9
Carbohydrateg3.64.4
Fatg0.41.5
Fiberg2.24.1
Total sugarsg0.40.8
Sodiummg7953
Saturated fatg0.1—

Values change with the amount you choose. A dash means the nutrient was not reported.

The difference at 200 calories.

Food amount

For 200 calories, the comparison uses 869.6 g of spinach and 571.4 g of kale.

Protein

Spinach provides more reported protein at equal calories: 24.9 g for spinach, compared with 16.7 g for kale.

Fiber

The fiber amounts are 19.1 g for spinach and 23.4 g for kale at 200 calories.

Sodium

At equal calories, the reported sodium amounts are 687 mg and 303 mg respectively. Added salt or a different brand can change this comparison.

Other choices to explore.

FoodBasisCaloriesProteinFiberSodium
Seaweed, spirulina, rawUSDA SR Legacy100 g265.9 g0.4 g98 mg
Cowpeas, leafy tips, cooked, boiled, drained, without saltUSDA SR Legacy100 g224.7 g—6 mg
Cowpeas, leafy tips, cooked, boiled, drained, with saltUSDA SR Legacy100 g224.7 g—242 mg