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Soy protein isolate nutrition facts

A typical portion of soy protein isolate (100 g; 100 g, soy protein isolate) has 340 calories and 88g of protein (USDA FoodData Central). USDA lists 2 descriptions of it: per 100 g they range from 321 calories (potassium type) to 335 (soy protein isolate).

Nutrition Facts

Serving size100 g (100g)
Amount per serving
Calories340
% Daily Value*
Total Fat 3.5g4%
Saturated Fat 0g2%
Trans Fat 0g
Cholesterol 0mg0%
Sodium 1010mg44%
Total Carbohydrate 0g0%
Dietary Fiber 0g0%
Total Sugars 0g
Includes Added Sugars not declared
Protein 88g177%
Vitamin D 0mcg0%
Calcium 180mg14%
Iron 15mg81%
Potassium 80mg2%

* The % Daily Value (DV) tells you how much a nutrient in a serving of food contributes to a daily diet. 2,000 calories a day is used for general nutrition advice. Protein % DV here is not corrected for protein quality.

USDA values per 100 g for Soy protein isolate, scaled to the portion. Check the USDA record.

Protein per 100 g
88.3g
more than 100% of 8,218 USDA reference foods
Calories per 100 g
335
more than 77% of reference foods
Sodium per 100 g
1,005mg
more than 95% of reference foods

100 g weighs 100 g in USDA's record for Soy protein isolate (FDC 174276).

Where the calories come from: 0% carbohydrate, 8% fat and 92% protein (4 calories a gram of protein or carbohydrate, 9 of fat).

Also rich in

  • Copper1.6 mg in 100 g (100 g), 178% of the Daily Value
  • Manganese1.5 mg in 100 g (100 g), 65% of the Daily Value
  • Phosphorus776 mg in 100 g (100 g), 62% of the Daily Value
  • Folate176 µg DFE in 100 g (100 g), 44% of the Daily Value
  • Zinc4.0 mg in 100 g (100 g), 37% of the Daily Value
  • Choline191 mg in 100 g (100 g), 35% of the Daily Value
  • Thiamin0.2 mg in 100 g (100 g), 15% of the Daily Value

Source: USDA FoodData Central (FDC 174276), every nutrient the record reports; FDA Daily Values, 21 CFR 101.9.

Every form of soy protein isolate USDA describes

Soy protein isolate has the most calories per 100 g (335); the fewest: Potassium type (321)

Calories per 100 g by USDA description of soy protein isolateSoy protein isolate335Potassium type321Calories per 100 g by USDA description of soy protein isolateSoy protein isolate335Potassium type321Calories per 100 g by USDA description of soy protein isolateSoy protein isolate335Potassium type321Calories per 100 g by USDA description of soy protein isolateSoy protein isolate335Potassium type321Calories per 100 g by USDA description of soy protein isolateSoy protein isolate335Potassium type321Calories per 100 g by USDA description of soy protein isolateSoy protein isolate335Potassium type321Calories per 100 g by USDA description of soy protein isolateSoy protein isolate335Potassium type321Calories per 100 g by USDA description of soy protein isolateSoy protein isolate335Potassium type321Calories per 100 g by USDA description of soy protein isolateSoy protein isolate335Potassium type321
Per 100 g, USDA FoodData Central. The violet bar is the form on the label at left.
All 2 USDA descriptions of soy protein isolate, per 100 g
USDA descriptionCaloriesProteinFatSodium
Soy protein isolate33588.3 g3.4 g1,005 mg
Soy protein isolate, potassium type32188.3 g0.5 g50 mg

Every nutrient in this record (87)

The portion is 100 g (100 g); % DV is for that portion.

Energy, macronutrients and sugars (14)
NutrientPer portionPer 100 g% DV
Protein88.3 g88.3 g177%
Total lipid (fat)3.39 g3.39 g4%
Carbohydrate, by difference0 g0 g0%
Ash3.58 g3.58 g
Energy335 kcal335 kcal
Alcohol, ethyl0 g0 g
Water4.98 g4.98 g
Total Sugars0 g0 g
Fiber, total dietary0 g0 g0%
Cholesterol0 mg0 mg0%
Fatty acids, total trans0 g0 g
Fatty acids, total saturated0.42 g0.42 g2%
Fatty acids, total monounsaturated0.65 g0.65 g
Fatty acids, total polyunsaturated1.65 g1.65 g
Minerals (10)
NutrientPer portionPer 100 g% DV
Calcium, Ca178 mg178 mg14%
Iron, Fe14.5 mg14.5 mg81%
Magnesium, Mg39.0 mg39.0 mg9%
Phosphorus, P776 mg776 mg62%
Potassium, K81.0 mg81.0 mg2%
Sodium, Na1,005 mg1,005 mg44%
Zinc, Zn4.03 mg4.03 mg37%
Copper, Cu1.60 mg1.60 mg178%
Manganese, Mn1.49 mg1.49 mg65%
Selenium, Se0.80 µg0.80 µg1%
Vitamins (24)
NutrientPer portionPer 100 g% DV
Retinol0 µg0 µg
Vitamin A, RAE0 µg0 µg0%
Carotene, beta0 µg0 µg
Carotene, alpha0 µg0 µg
Vitamin E (alpha-tocopherol)0 mg0 mg0%
Vitamin D (D2 + D3)0 µg0 µg0%
Cryptoxanthin, beta0 µg0 µg
Lycopene0 µg0 µg
Lutein + zeaxanthin0 µg0 µg
Vitamin C, total ascorbic acid0 mg0 mg0%
Thiamin0.18 mg0.18 mg15%
Riboflavin0.10 mg0.10 mg8%
Niacin1.44 mg1.44 mg9%
Pantothenic acid0.060 mg0.060 mg
Vitamin B-60.10 mg0.10 mg6%
Folate, total176 µg176 µg
Vitamin B-120 µg0 µg0%
Choline, total191 mg191 mg35%
Vitamin K (phylloquinone)0 µg0 µg0%
Folic acid0 µg0 µg
Folate, food176 µg176 µg
Folate, DFE176 µg176 µg44%
Vitamin E, added0 mg0 mg
Vitamin B-12, added0 µg0 µg
Amino acids (18)
NutrientPer portionPer 100 g% DV
Tryptophan1.12 g1.12 g
Threonine3.14 g3.14 g
Isoleucine4.25 g4.25 g
Leucine6.78 g6.78 g
Lysine5.33 g5.33 g
Methionine1.13 g1.13 g
Cystine1.05 g1.05 g
Phenylalanine4.59 g4.59 g
Tyrosine3.22 g3.22 g
Valine4.10 g4.10 g
Arginine6.67 g6.67 g
Histidine2.30 g2.30 g
Alanine3.59 g3.59 g
Aspartic acid10.2 g10.2 g
Glutamic acid17.5 g17.5 g
Glycine3.60 g3.60 g
Proline4.96 g4.96 g
Serine4.59 g4.59 g
Fatty acids (19)
NutrientPer portionPer 100 g% DV
SFA 4:00 g0 g
SFA 6:00 g0 g
SFA 8:00 g0 g
SFA 10:00 g0 g
SFA 12:00 g0 g
SFA 14:00.0080 g0.0080 g
SFA 16:00.31 g0.31 g
SFA 18:00.10 g0.10 g
MUFA 18:10.64 g0.64 g
PUFA 18:21.45 g1.45 g
PUFA 18:30.20 g0.20 g
PUFA 20:40 g0 g
PUFA 22:6 n-3 (DHA)0 g0 g
MUFA 16:10.0080 g0.0080 g
PUFA 18:40 g0 g
MUFA 20:10 g0 g
PUFA 20:5 n-3 (EPA)0 g0 g
MUFA 22:10 g0 g
PUFA 22:5 n-3 (DPA)0 g0 g

Source: USDA FoodData Central, FDC 174276: every value the record reports, per 100 g as USDA gives it and scaled to the portion; Daily Values: 21 CFR 101.9.

Source: USDA FoodData Central (SR Legacy, Foundation Foods and Survey foods), April 30, 2026 release.

Questions

How many calories are in soy protein isolate?

340 in 100 g (100 g) of soy protein isolate; 321 to 335 per 100 g across USDA's descriptions.

How much protein is in soy protein isolate?

88g in 100 g; 88.3 g per 100 g.

How much sodium is in soy protein isolate?

1010mg in 100 g; 1,005 mg per 100 g. Salt added in cooking changes it: USDA lists salted and unsalted forms separately where it measured both.

Sources for this page
USDA FoodData Central
the food and product records, April 30, 2026 release. fdc.nal.usda.gov
FoodData Central documentation
what each data type is and how branded records are submitted. fdc.nal.usda.gov
USDA Food and Nutrient Database for Dietary Studies
the survey foods and their portions. ars.usda.gov
21 CFR 101.9, Nutrition labeling of food
the label format, rounding and Daily Values. ecfr.gov
FDA, How to Understand and Use the Nutrition Facts Label
the 5% and 20% Daily Value rule. fda.gov