Calories and Nutritional Breakdown of 100g Walnuts (2026 Guide)

August 11, 2026

What Are the Calories in 100g of Walnuts?

Walnuts are a nutrient-dense food, packed with healthy fats and essential nutrients. In 100 grams of walnuts, there are approximately 654 calories. This high caloric content comes primarily from healthy fats, making walnuts a smart choice for those looking to add healthy energy to their diets.

What Nutrients are Found in 100g of Walnuts?

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Walnuts are not just high in calories; they're also rich in various nutrients. Here’s a detailed breakdown of the nutritional content in 100 grams of walnuts:

Nutrient Amount per 100g
Calories 654
Total Fat 65.2g
Saturated Fat 6.1g
Polyunsaturated Fat 47.2g
Carbohydrates 13.7g
Dietary Fiber 6.7g
Sugars 2.6g
Protein 15.2g
Vitamin E 0.7mg
Magnesium 158mg
Omega-3 Fatty Acids 9.08g

What Are the Health Benefits of Walnuts?

How Can You Incorporate Walnuts into Your Diet?

Walnuts are incredibly versatile and can be enjoyed in various ways. Here are some ideas:

If you're interested in tracking your calorie intake when enjoying walnuts, consider using SlimmerAI. This app allows you to snap a photo of your food and get calorie counts instantly.

Frequently Asked Questions

How many walnuts can I eat in a day?

It's generally recommended to consume about 30 grams (approximately a handful) of walnuts per day for optimal health benefits.

Are walnuts good for weight loss?

Yes, walnuts can support weight loss due to their high fiber and protein content, which helps you feel full longer.

Do walnuts contain any allergens?

Yes, walnuts are tree nuts and can trigger allergic reactions in some individuals. It's important to avoid them if you have a nut allergy.

How should I store walnuts to maintain freshness?

Store walnuts in an airtight container in a cool, dark place. Refrigeration can help extend their shelf life.

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