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  1. Walnuts

Walnuts have 65.2 g fat per 100 g – among the fattiest tree nuts. A staple of Bulgarian cuisine in tarator, baklava, and kozunak, 30 g (roughly 7 halves) delivers 196 kcal. Unlike cashews and pistachios, walnuts are gentle on digestion — low in the carbs that trigger bloating. Weigh rather than counting halves — sizes vary significantly.

About this food

How should I track Walnuts?

Walnuts is high in magnesium. Nuts like Walnuts are one of the easiest foods to overeat. Research on portion estimation (Almiron-Roig et al., Appetite 2013) found that people underestimate calorie-dense foods by 50–200% when eyeballing portions. A small handful can easily be 300+ calories. The best habit: pre-portion into 30 g bags or use a scale each time. Also check whether your nuts are raw, roasted, or roasted-in-oil — the roasted-in-oil versions add extra fat that is not in the raw nutrition values.

Macro Breakdown

Macro Split: 9% Protein, 8% Carbs, 83% FatMacro Split100%
Protein9%15.0g
Carbs8%14.0g
Fat83%65.0g

Nutrition Facts

Per 100g. Percentages reflect Daily Value (DV).

Energy
  • Calories
    654kcal—
Macronutrients
  • Protein
    15.0g30%
  • Carbohydrates
    14.0g—
  • Fat
    65.0g—
  • Fiberathlete
    6.7g24%
  • Sugar
    2.6g—
  • Saturated Fat
    6.1g—
Minerals
  • Sodium
    2mg—
  • Calciumathlete
    98mg8%
  • Ironathlete
    3mg16%
Vitamins
  • Vitamin Dathlete
    0.0mcg0%

% Daily Value based on FDA 2,000 kcal reference diet. Strength trainees have different needs — see highlighted nutrients.

Serving Calculator

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Walnuts — values for 30g

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Primary macros

Calories
196
kcal
Protein
4.5
g
Carbs
4.2
g
Fat
19.5
g

More nutrients

Fiber
2.0g
Sugar
0.8g
Sat. Fat
1.8g
Sodium
1mg
Calcium
29mg
Iron
1mg
Potassium
132mg
Magnesium
47mg
Zinc
1mg
Vitamin D
0.0mcg
Nutrient highlights
High in MagnesiumHigh in ZincHigh in FiberGood Source of IronGood Source of Protein

Frequently Asked Questions

Walnuts is high in magnesium. Nuts like Walnuts are one of the easiest foods to overeat. Research on portion estimation (Almiron-Roig et al., Appetite 2013) found that people underestimate calorie-dense foods by 50–200% when eyeballing portions. A small handful can easily be 300+ calories. The best habit: pre-portion into 30 g bags or use a scale each time. Also check whether your nuts are raw, roasted, or roasted-in-oil — the roasted-in-oil versions add extra fat that is not in the raw nutrition values.

Walnuts contains 15g protein per 100g, which is a good source of protein. A 30g serving provides 4.5g protein.

Notable nutrients in Walnuts include Magnesium, Zinc and Fiber. Per 100g: 15g protein, 14g carbs, and 65g fat.

Walnuts contains 654 kcal per 100g, making it more calorie-dense. For weight loss, control portion sizes and fit it within your daily calorie targets.

Walnuts can fit into a keto diet in moderate amounts. At 7.3g net carbs per 100g, smaller portions can stay within the daily limit.

Walnuts provides 654 kcal, 15g protein, 14g carbs, and 65g fat per 100g. Compare with other nuts & seeds foods in our database to find the best option for your nutritional goals.

Track this food

30g(Standard)
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Prepared Foods

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Dairy Products

White Cheese (Sirene)

264 kcal17.0g protein

Evidence-based. Peer-reviewed. Adapted to you.

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Portion errors reach 50–200% for dense foods. Calibr8 uses verified data and adapts from real results.

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Nuts & Seeds

Walnuts

Macros per 100g

654
Calories
Protein15.0g
Fat65.0g
Carbs14.0g
Article research basis
1,316Papers Analyzed
4,705Foods in Database
100%Peer-Reviewed Sources
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Reviewed by Calibr8

Peer-reviewed data · Last updated March 22, 2026

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Potassium
441mg9%
  • Magnesiumathlete
    158mg38%
  • Zincathlete
    3mg28%
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