Written by CalorieData Nutrition TeamReviewed by a Registered DietitianLast Updated: March 2026

Walnuts vs Sunflower Seeds: Nutrition Comparison

Which is healthier? Compare calories, protein, carbs, and more

Complete side-by-side nutrition comparison per 100g serving | Updated 2026

Which is Healthier?

Sunflower Seeds is generally healthier

Sunflower Seeds comes out ahead in this comparison, winning in 2 out of 5 key nutritional categories. It has fewer calories (584 vs 654), more fiber (8.6g vs 6.7g), making it the better choice for most health goals.

Quick Summary

Fewer Calories

Sunflower Seeds

584 kcal

More Protein

Walnuts

9g

More Fiber

Sunflower Seeds

8.6g

Less Sugar

Walnuts

2.6g

Visual Comparison

Caloriesper 100g
Walnuts
654
Sunflower Seeds
584
Proteinper 100g
Walnuts
9g
Sunflower Seeds
9g
Carbohydratesper 100g
Walnuts
14g
Sunflower Seeds
20g
Fatper 100g
Walnuts
65g
Sunflower Seeds
51g

Side-by-Side Nutrition Table

NutrientWalnutsSunflower SeedsDifference
Calories654kcal584kcal+70.0kcal
Protein9g9g0.0g
Carbohydrates14g20g-6.0g
Fat65g51g+14.0g
Fiber6.7g8.6g-1.9g
Sugar2.6g2.6g0.0g
Sodium2mg9mg-7.0mg

Serving Size Comparison

All values above are per 100g. Here's how they compare in common serving sizes:

Walnuts

Per 100g:654 calories
Per cup (150g):981 calories
Per serving (85g):556 calories

Sunflower Seeds

Per 100g:584 calories
Per cup (150g):876 calories
Per serving (85g):496 calories

Diet Compatibility

Walnuts

VeganVegetarianPaleoLow-Sodium

Sunflower Seeds

VeganVegetarianPaleoLow-Sodium

When to Choose Walnuts

  • Higher in protein (9g vs 9g)
  • Lower in carbs (14g vs 20g)
  • Less sugar (2.6g vs 2.6g)
  • Lower sodium (2mg vs 9mg)

Common Uses

SnackingToppingsTrail mixBaking
View full Walnuts nutrition →

When to Choose Sunflower Seeds

  • Lower in calories (584 vs 654)
  • More fiber (8.6g vs 6.7g)

Common Uses

SnackingToppingsTrail mixBaking
View full Sunflower Seeds nutrition →

Walnuts vs Sunflower Seeds: Nutritional Analysis

Walnuts is more calorie-dense at 654 calories per 100g compared to 584 for Sunflower Seeds, a difference of 70 calories. These differences become meaningful when you consider how each food fits into your daily dietary pattern rather than looking at any single nutrient in isolation.

Macronutrient Breakdown

The macronutrient profiles of Walnuts and Sunflower Seeds tell different nutritional stories. Walnuts provides 14g of carbohydrates, 65g of fat, and 6.7g of fiber per 100g, while Sunflower Seeds contains 20g carbs, 51g fat, and 8.6g fiber. The higher fiber content in Sunflower Seeds supports digestive health, helps regulate blood sugar after meals, and contributes to longer-lasting satiety.

Key Takeaways

  • For weight management: Sunflower Seeds is the lower-calorie choice at 584 cal/100g, making it more suitable for calorie-controlled diets.
  • For muscle building: Walnuts provides more protein (9g/100g), supporting muscle repair and growth.
  • For sustained energy: Sunflower Seeds offers more fiber (8.6g/100g), which slows digestion and provides steadier energy release.
  • Overall: Neither food is universally "better" than the other. The right choice depends on your specific nutritional goals, meal context, and dietary preferences. Both can play a role in a balanced diet.

Frequently Asked Questions

Which has more calories, Walnuts or Sunflower Seeds?

Walnuts has more calories with 654 kcal per 100g, compared to Sunflower Seeds with 584 kcal. That's a difference of 70 calories per 100g serving.

Is Walnuts healthier than Sunflower Seeds?

Based on our nutritional analysis, Sunflower Seeds is generally the healthier choice, winning in 2 out of 5 key nutritional categories. Sunflower Seeds has 584 calories, 9g protein, and 8.6g fiber per 100g. However, the best choice depends on your specific dietary goals.

What is the protein difference between Walnuts and Sunflower Seeds?

Walnuts and Sunflower Seeds have the same protein content at 9g per 100g.

Which is better for weight loss, Walnuts or Sunflower Seeds?

For weight loss, Sunflower Seeds is the better choice with only 584 calories per 100g compared to 654 calories in Walnuts. Sunflower Seeds also offers 8.6g of fiber per 100g, which helps you feel fuller longer.

Does Walnuts or Sunflower Seeds have fewer carbs?

Walnuts has fewer carbs with 14g per 100g, compared to Sunflower Seeds with 20g. If you're following a low-carb diet, Walnuts is the better option with 6.0g fewer carbohydrates.

About Our Data

All nutrition data in this comparison is sourced from the USDA FoodData Central, the official food composition database maintained by the U.S. Department of Agriculture. Values are based on 100g servings for accurate comparison.

Health Disclaimer: This comparison is for informational purposes only and is not intended as medical or dietary advice. Nutritional needs vary by individual. The best food choice depends on your personal health goals, dietary requirements, and preferences. Consult a healthcare provider or registered dietitian for personalized nutrition guidance.