Caloric and Nutritional Breakdown of 100g Pecans vs. Walnuts (2026 Guide)

July 25, 2026

How Do Pecans and Walnuts Compare Nutritionally?

Pecans and walnuts are both popular nuts that offer a range of health benefits, but they differ in their caloric and nutritional profiles. In 100 grams, pecans provide 691 calories, while walnuts offer 654 calories. Both nuts are rich in healthy fats, protein, and essential nutrients but vary slightly in their composition.

What Are the Caloric Values of Pecans and Walnuts?

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NutrientPecans (per 100g)Walnuts (per 100g)
Calories691 kcal654 kcal
Protein9.17 g15.23 g
Fat72.5 g65.21 g
Carbohydrates13.86 g13.71 g
Fiber9.6 g6.7 g
Sugars3.97 g2.61 g

What Are the Health Benefits of Pecans?

Pecans may be more than just a delicious addition to desserts and salads — they offer numerous health benefits:

What Are the Health Benefits of Walnuts?

Walnuts, often touted as a superfood, come with their own array of health benefits:

How to Incorporate Pecans and Walnuts into Your Diet?

The versatility of pecans and walnuts makes them easy to include in your meals and snacks:

Can SlimmerAI Help Me Track Nut Calories?

If you're looking to track your nut consumption, SlimmerAI can be a great resource. The app allows you to snap a photo of your food, including nuts like pecans and walnuts, and get instant calorie and nutritional information. This makes portion control easier without the need for manual logging.

Frequently Asked Questions

Are pecans or walnuts better for weight loss?

Both nuts can be part of a weight-loss diet when consumed in moderation. Pecans are higher in calories but can help with satiety, while walnuts provide omega-3s beneficial for overall health.

How much fiber do pecans and walnuts contain?

Pecans contain about 9.6 grams of fiber per 100 grams, while walnuts have about 6.7 grams of fiber. Both are good sources of dietary fiber.

Can I replace one for the other in recipes?

Yes, you can often substitute pecans for walnuts or vice versa in recipes, but keep in mind that the flavors and textures are different.

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