Kale vs Spinach
Side-by-side nutrition comparison per serving. See which fits your goals better.
The kale vs spinach rivalry is basically the nutrition world's version of a superhero crossover — both are elite, and arguing over which is 'better' kind of misses the point. But since you're here: kale wins on fiber by a landslide (4.1g vs 2.2g per 100g) and edges out spinach slightly on protein (2.92g vs 2.86g). Kale is also significantly higher in vitamin C and vitamin K. On paper, kale is the more nutrient-dense green.
But here's the thing — spinach is dramatically easier to eat in volume. It has a mild flavor, melts into smoothies, wilts into sauces, and disappears into omelets. Raw kale requires massaging (yes, literally rubbing it with your hands and some acid) to be palatable in salads. Most people who buy kale with good intentions end up watching it turn yellow in the crisper drawer. The best green is the one you'll actually eat consistently.
Pro tip
If you want kale's nutrition without the tough texture, strip the leaves from the stems, chop them finely, and massage with a squeeze of lemon juice and a pinch of salt for 2-3 minutes. The leaves will darken and soften dramatically. Now it actually works in a salad.
Quick Verdict
Best for weight loss
Spinach
Best for muscle gain
Kale
Best for low-carb
Spinach
Macro Comparison
Kale: 100g (100g) | Spinach: 100g (100g)
35
Kale
23
Spinach
2.92g
Kale
2.86g
Spinach
4.42g
Kale
3.63g
Spinach
1.49g
Kale
0.39g
Spinach
Protein Efficiency
What percentage of calories come from protein — higher is better for staying lean.
33%
Kale
50%
Spinach
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| Nutrient | Kale | Spinach |
|---|---|---|
| Calories | 35 | 23 |
| Protein | 2.9g | 2.9g |
| Carbs | 4.4g | 3.6g |
| Fat | 1.5g | 0.4g |
| Fiber | 4.1g | 2.2g |
| Sugar | 0.99g | 0.42g |
| Sodium | 53mg | 79mg |
| Cholesterol | 0mg | 0mg |
| Saturated Fat | 0.18g | 0.06g |
| Potassium | 348mg | 558mg |
| Vitamin A | 241mcg | 469mcg |
| Vitamin C | 93.4mg | 28.1mg |
| Calcium | 254mg | 99mg |
| Iron | 1.6mg | 2.71mg |
Which Should You Choose?
For weight loss
Choose Spinach. With 23 calories and 2.86g protein, it gives you more protein per calorie — keeping you full while cutting calories.
For muscle gain
Choose Kale. Kale delivers 2.92g protein per serving — 0.1g more than Spinach.
For low-carb diets
Choose Spinach with 3.63g carbs per serving.
Consistency beats perfection every time. It doesn't matter that kale has more fiber if you actually eat spinach five days a week and kale once. Sunn helps you build daily habits around the foods you genuinely enjoy, not the ones that look good on Instagram.
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Take the free quizCommon Questions
Is Kale or Spinach better for weight loss?
For weight loss, Spinach is the better choice. Kale has 35 calories and 2.92g protein per serving, while Spinach has 23 calories and 2.86g protein. Lower calories with higher protein helps you stay full while eating fewer calories.
Which has more protein, Kale or Spinach?
Kale has more protein per serving. Kale provides 2.92g and Spinach provides 2.86g of protein.
Can I eat both kale and spinach together?
Yes! Combining kale and spinach gives you 58 calories and 5.779999999999999g protein. This combination can work well as part of a balanced meal.