United States Department of Agriculture
Agricultural Research Service

National Nutrient Database for Standard Reference Release 28
Basic Report:  12155, Nuts, walnuts, english a  b 
heading Nutrient Unit
Value per 100 g

cup, chopped 117 g

cup, ground 80 g

cup, in shell, edible yield (7 nuts) 28 g

cup shelled (50 halves) 100 g

cup pieces or chips 120 g

oz (14 halves) 28.35 g
Proximates Water g 4.07 4.76 3.26 1.14 4.07 4.88 1.15
Proximates Energy kcal 654 765 523 183 654 785 185
Proximates Protein g 15.23 17.82 12.18 4.26 15.23 18.28 4.32
Proximates Total lipid (fat) g 65.21 76.30 52.17 18.26 65.21 78.25 18.49
Proximates Carbohydrate, by difference g 13.71 16.04 10.97 3.84 13.71 16.45 3.89
Proximates Fiber, total dietary g 6.7 7.8 5.4 1.9 6.7 8.0 1.9
Proximates Sugars, total g 2.61 3.05 2.09 0.73 2.61 3.13 0.74
Minerals Calcium, Ca mg 98 115 78 27 98 118 28
Minerals Iron, Fe mg 2.91 3.40 2.33 0.81 2.91 3.49 0.82
Minerals Magnesium, Mg mg 158 185 126 44 158 190 45
Minerals Phosphorus, P mg 346 405 277 97 346 415 98
Minerals Potassium, K mg 441 516 353 123 441 529 125
Minerals Sodium, Na mg 2 2 2 1 2 2 1
Minerals Zinc, Zn mg 3.09 3.62 2.47 0.87 3.09 3.71 0.88
Vitamins Vitamin C, total ascorbic acid mg 1.3 1.5 1.0 0.4 1.3 1.6 0.4
Vitamins Thiamin mg 0.341 0.399 0.273 0.095 0.341 0.409 0.097
Vitamins Riboflavin mg 0.150 0.176 0.120 0.042 0.150 0.180 0.043
Vitamins Niacin mg 1.125 1.316 0.900 0.315 1.125 1.350 0.319
Vitamins Vitamin B-6 mg 0.537 0.628 0.430 0.150 0.537 0.644 0.152
Vitamins Folate, DFE µg 98 115 78 27 98 118 28
Vitamins Vitamin B-12 µg 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Vitamins Vitamin A, RAE µg 1 1 1 0 1 1 0
Vitamins Vitamin A, IU IU 20 23 16 6 20 24 6
Vitamins Vitamin E (alpha-tocopherol) mg 0.70 0.82 0.56 0.20 0.70 0.84 0.20
Vitamins Vitamin D (D2 + D3) µg 0.0 0.0 0.0 0.0 0.0 0.0 0.0
Vitamins Vitamin D IU 0 0 0 0 0 0 0
Vitamins Vitamin K (phylloquinone) µg 2.7 3.2 2.2 0.8 2.7 3.2 0.8
Lipids Fatty acids, total saturated g 6.126 7.167 4.901 1.715 6.126 7.351 1.737
Lipids Fatty acids, total monounsaturated g 8.933 10.452 7.146 2.501 8.933 10.720 2.533
Lipids Fatty acids, total polyunsaturated g 47.174 55.194 37.739 13.209 47.174 56.609 13.374
Lipids Cholesterol mg 0 0 0 0 0 0 0
Other Caffeine mg 0 0 0 0 0 0 0

Footnotes

a  Unroasted
b  Other phytosterols total 18.2 mg/100g; these include delta 5-avenasterol (7.3), campestanol (2.3), and other minor phytosterols (8.6 mg).