Kale and romaine lettuce are both popular salad greens but differ substantially in nutrient density. Kale is one of the most nutrient-dense foods available — exceptionally high in vitamins K, A, and C, plus calcium, iron, and antioxidants. Romaine lettuce is much lighter in nutrient density but provides a milder flavour and more hydration due to its high water content. Kale has a stronger, more bitter flavour that takes some getting used to, while romaine is palatable to virtually everyone. For maximum micronutrient intake from your salad base, kale is the clear winner. For everyday salads with broad appeal, romaine provides a light, nutritious foundation.
⚖️ Nutrition Comparison
| Nutrient | Kale | Romaine Lettuce |
|---|---|---|
| Calories | 41.6 kcal | 15.3 kcal |
| Total Fat | 0.8 g | 0 g |
| Saturated Fat | 0.1 g | 0 g |
| Cholesterol | 0 mg | 0 mg |
| Sodium | 32.3 mg | 34.8 mg |
| Total Carbs | 7.4 g | 2 g |
| Dietary Fiber | 3.1 g | 1 g |
| Sugars | 1.9 g | 1 g |
| Protein | 3.6 g | 1 g |
* Nutrition data sourced from the USDA Food Central Database. Values have been normalized to match the larger serving size for a fair comparison. Individual products may vary. ✓ indicates the better value for that nutrient.
💬 Nutrition Q&A
Which has more calories, Kale or Romaine Lettuce?
Kale has 41.6 calories and Romaine Lettuce has 15.3 calories per comparable serving. Kale is the more calorie-dense of the two.
Which has more protein, Kale or Romaine Lettuce?
Kale provides 3.6g of protein versus 1g in Romaine Lettuce. Kale is the higher-protein choice.
Which has less fat, Kale or Romaine Lettuce?
Kale contains 0.8g of fat compared with 0g in Romaine Lettuce. Romaine Lettuce is the leaner option.
Which has less saturated fat, Kale or Romaine Lettuce?
Kale has 0.1g of saturated fat and Romaine Lettuce has 0g. Romaine Lettuce is lower in saturated fat.
Which has more sodium, Kale or Romaine Lettuce?
Kale contains 32.3mg of sodium versus 34.9mg in Romaine Lettuce. Romaine Lettuce is higher in sodium.
Which has more fiber, Kale or Romaine Lettuce?
Kale has 3.1g of fiber and Romaine Lettuce has 1g. Kale provides more fiber.
📋 Full Nutrition Details
See the complete nutrition breakdown for each food individually, including vitamins and minerals.
Calories in Kale → Calories in Romaine Lettuce →