Caloric and Nutritional Analysis of 100g Walnuts (2026 Guide)

June 13, 2026

What Are the Calories in 100g of Walnuts?

100 grams of walnuts contain approximately 654 calories. They are known for their rich flavor and crunchy texture, making them a popular snack as well as an ingredient in various dishes. Eating walnuts can provide healthy fats, protein, and essential vitamins and minerals, which are beneficial for your health.

What Nutrients Are Found in Walnuts?

Tired of manual logging?SlimmerAI counts calories from a photo — free, no sign-up.
Get the app

Walnuts are nutrient-dense, offering a wide range of vitamins, minerals, and macronutrients that play a vital role in maintaining overall health. Here's a breakdown of the key nutrients found in 100g of walnuts:

Nutrient Amount per 100g
Calories 654
Protein 15.2 g
Total Fat 65.2 g
Saturated Fat 6.1 g
Carbohydrates 13.7 g
Fiber 6.7 g
Sugars 2.6 g
Calcium 98 mg
Iron 2.9 mg
Magnesium 158 mg
Vitamin E 0.7 mg

What Are the Health Benefits of Walnuts?

How Can Walnuts Be Included in Your Diet?

Walnuts are versatile and can be easily included in your diet. Here are some ideas:

How Does SlimmerAI Help with Caloric Counting?

If you're looking to maintain a healthy lifestyle or manage your weight, tracking your caloric intake is essential. SlimmerAI makes this process effortless; simply snap a photo of your meal, and the app will analyze it and provide you with instant calorie counts and nutritional breakdowns. With SlimmerAI, you can focus on your health without the hassle of manual logging.

Frequently Asked Questions

Can walnuts help with weight loss?

Yes, walnuts can aid in weight loss due to their high fiber content which helps you feel full and satisfied.

Are walnuts good for heart health?

Absolutely! Walnuts are rich in omega-3 fatty acids which are beneficial for heart health.

How many walnuts should I eat a day?

Experts suggest eating about 28g (approximately 7 walnuts) to reap the health benefits without excessive calorie intake.

What is the best way to consume walnuts?

Raw or lightly toasted walnuts are the healthiest options, as roasting can sometimes diminish their nutritional quality.

Stop guessing your calories

SlimmerAI snaps a photo of your food and counts the calories for you — protein and fat too. No login. No subscription. Just download and start.

Download free for iPhone
Download free