Walnuts, kernel only
Per 100 g, Walnuts, kernel only provides 688 calories, 3.3 g carbohydrate, 14.7 g protein and 3.5 g fibre.
= 688 kcal
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688kcal 34% RI Reference IntakeEU/UK adult daily energy reference of 2,000 kcal used on packaged-food nutrition labels (Reg. 1169/2011). Switch to the US toggle for FDA Daily Values.
Protein14.7g9% kcal
Carbs3.3g2% kcal
Fat68.5g90% kcal
Fiber 3.5g
Water2.8g
High in
Full nutrient breakdown
Reference
Proximates
- Protein ProteinBuilds and repairs tissue, drives enzymes and hormones. Made up of amino acids, nine of which the body can't make itself.UK adult RI: 50 g/day14.7g14.7g29%
- Fat FatAll fats combined: saturated, monounsaturated, polyunsaturated, and trans. Carries fat-soluble vitamins (A, D, E, K) and contributes 9 kcal per gram.UK adult RI: 70 g/day68.5g68.5g98%
- Carbohydrate CarbohydrateAll carbohydrate combined: sugars, starches, and fiber. Calculated by subtracting water + protein + fat + ash from the food's total mass, hence "by difference".UK adult RI: 260 g/day3.30g3.30g1%
- Fiber FiberPlant carbohydrate the body can't digest. Feeds gut bacteria, slows sugar absorption, and supports regular digestion. UK adults: target 30 g/day.UK adult RI: 30 g/day3.50g3.50g12%
Carbohydrates
Fats and Fatty Acids
Sterols
Vitamins
- Vitamin C Vitamin CWater-soluble antioxidant + cofactor in collagen synthesis. Lost easily in cooking water and air exposure.UK adult RI: 80 mg/day0mg0mg0%
- Vitamin B1 (thiamin) Vitamin B1 (thiamin)Water-soluble B-vitamin for carbohydrate metabolism and nerve function. Whole grains, pork, and legumes are good sources.UK adult RI: 1.1 mg/day0.40mg0.40mg36%
- Vitamin B2 (riboflavin) Vitamin B2 (riboflavin)Water-soluble B-vitamin for energy production, cell growth, and skin health. Dairy, eggs, and lean meat are densest.UK adult RI: 1.4 mg/day0.14mg0.14mg10%
- Vitamin B3 (niacin) Vitamin B3 (niacin)Water-soluble B-vitamin for energy metabolism. The body can also make some niacin from the amino acid tryptophan.UK adult RI: 16 mg/day1.20mg1.20mg8%
- Vitamin B5 (pantothenic acid) Vitamin B5 (pantothenic acid)Water-soluble B-vitamin involved in coenzyme A, essential for energy metabolism and the synthesis of hormones, cholesterol, and red blood cells.UK adult RI: 6 mg/day1.60mg1.60mg27%
- Vitamin B6 Vitamin B6Water-soluble B-vitamin for amino acid metabolism and neurotransmitter synthesis.UK adult RI: 1.4 mg/day0.67mg0.67mg48%
- Vitamin B7 (biotin) Vitamin B7 (biotin)Water-soluble B-vitamin for fatty acid synthesis and energy metabolism. Widespread in foods, deficiency is rare.UK adult RI: 50 µg/day19.0µg19.0µg38%
- Folate FolateWater-soluble B-vitamin essential for DNA synthesis and cell division. Critical pre-conception and in early pregnancy to prevent neural tube defects.UK adult RI: 200 µg/day66.0µg66.0µg33%
- Vitamin B12 Vitamin B12Water-soluble B-vitamin essential for red blood cell formation and the nervous system. Only found naturally in animal foods, vegans need fortified foods or supplements.UK adult RI: 2.5 µg/day0µg0µg0%
- Vitamin A Vitamin AFat-soluble vitamin for vision, immune function, and skin. Measured in retinol activity equivalents (RAE) so plant and animal sources are comparable.UK adult RI: 800 µg/day0µg0µg0%
- Vitamin E Vitamin EFat-soluble antioxidant that protects cell membranes from oxidative damage. Nuts, seeds, and vegetable oils are the densest sources.UK adult RI: 12 mg/day3.85mg3.85mg32%
- Vitamin D Vitamin DFat-soluble vitamin essential for calcium absorption and bone health. The skin also synthesises it from sunlight, so dietary intake matters most over winter.UK adult RI: 5 µg/day0µg0µg0%
Minerals
- Calcium CalciumMajor mineral for bone density, muscle contraction, and nerve signalling.UK adult RI: 800 mg/day94.0mg94.0mg12%
- Iron IronCarries oxygen in haemoglobin. Plant (non-heme) iron absorbs less efficiently than meat (heme) iron, pair with vitamin C to boost absorption.UK adult RI: 14 mg/day2.90mg2.90mg21%
- Magnesium MagnesiumCofactor in 300+ enzyme reactions, energy metabolism, muscle relaxation, blood pressure regulation.UK adult RI: 375 mg/day160mg160mg43%
- Phosphorus PhosphorusMajor mineral for bones, energy storage (ATP), and cell membranes. Widespread in protein-rich foods.UK adult RI: 700 mg/day380mg380mg54%
- Potassium PotassiumElectrolyte mineral that counters sodium's effect on blood pressure. Concentrated in fruit, vegetables, beans, and dairy.UK adult RI: 2,000 mg/day450mg450mg23%
- Sodium SodiumMineral mostly consumed as salt (sodium chloride). Excess raises blood pressure in salt-sensitive people.UK adult RI: 2,400 mg/day7.00mg7.00mg0%
- Zinc ZincTrace mineral for immune function, wound healing, and sense of taste. Best absorbed from animal foods; phytates in grains reduce uptake.UK adult RI: 10 mg/day2.70mg2.70mg27%
- Copper CopperTrace mineral involved in iron metabolism and connective tissue.UK adult RI: 1 mg/day1.34mg1.34mg134%
- Manganese ManganeseTrace mineral for bone formation and antioxidant enzymes.UK adult RI: 2 mg/day3.40mg3.40mg170%
- Iodine IodineTrace mineral essential for thyroid hormone synthesis. Dairy, seafood, and iodised salt are the main sources.UK adult RI: 150 µg/day9.00µg9.00µg6%
- Selenium SeleniumTrace mineral that supports thyroid hormone metabolism and antioxidant defence. Brazil nuts are the densest source.UK adult RI: 55 µg/day3.00µg3.00µg5%
Other
Walnuts, kernel only: calories by amount
- 100 g688 kcal
- 150 g1032 kcal
- 200 g1376 kcal
- 250 g1720 kcal
Walnuts, kernel only: key facts
Good source of
- How many calories are in Walnuts, kernel only?
- Walnuts, kernel only has 688 calories per 100 g.
- How much protein is in Walnuts, kernel only?
- Walnuts, kernel only provides 14.7 g of protein per 100 g.
- How many carbs are in Walnuts, kernel only?
- Walnuts, kernel only contains 3.3 g of carbohydrate per 100 g, including 3.5 g of fibre.
- How much fat is in Walnuts, kernel only?
- Walnuts, kernel only has 68.5 g of fat per 100 g.
Values shown for the selected serving and per 100 g. % RI follows the UK / EU Reference Intakes (Reg. 1169/2011) for adults and children 4 + years. Reference only, not medical or dietary advice (Terms & Conditions §3).