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Walnuts, kernel only

Walnuts are nuts, and the figures here describe the edible kernels only, without the shells. They mainly provide fat, along with protein and a range of vitamins and minerals. Per 100g, walnut kernels contain 69g of fat, 15g of protein and 160mg of magnesium, and provide 2837 kJ of energy.

Most of the fat in walnuts is unsaturated. Protein contributes to the maintenance and repair of body tissues, while magnesium supports normal muscle and nerve function. Their high fat content makes walnuts energy-dense, which is worth noting when monitoring energy intake. The kernels described contain little salt, although added salt in other products can change this. Full nutrient figures are provided in the tables below.

Nutrition per 100g

Nutrient

Per 100g

Energy

688 kcal

Energy

2837 kJ

Gordura

69g

of which saturates

7.5g

Carbohydrate

3.3g

of which sugars

2.6g

Proteína

15g

Sal

0.02g

Álcool

0g

Água

2.8g

Colesterol

0mg

Vitamins and minerals per 100g

Nutrient

Per 100g

Vitamin A (retinol equivalent)

0µg

Vitamina D

0µg

Vitamina E

3.9mg

Vitamina C

0mg

Thiamin (B1)

0.4mg

Riboflavin (B2)

0.14mg

Niacin (B3)

1.2mg

Vitamina B6

0.67mg

Vitamina B12

0µg

Ácido Fólico

66µg

Cálcio

94mg

Ferro

2.9mg

Magnésio

160mg

Phosphorus

380mg

Potássio

450mg

Sódio

7mg

Zinco

2.7mg

Copper

1.3mg

Selenium

3µg

Iodo

9µg

Other types of walnuts

Alimentos

Calories per 100g

Protein per 100g

Fat per 100g

Fibre per 100g

Walnuts, kernel only, weighed with shells

295 kcal

6.3g

29g

–

About these figures

Values are per 100g of the food as described (10 samples). "Trace" means only a very small amount was found. Nutrients that were not measured are not shown. Salt is calculated from sodium.

Leitura adicional e referências

  • Public Health England. McCance and Widdowson's The Composition of Foods Integrated Dataset 2021. GOV.UK.

Histórico do artigo

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  • 4 Nov 2026 | Última versão
  • 3 Nov 2026 | Publicado originalmente