How Much Protein Is In Natto?
Natto is a plant-based protein source. It is a good source of protein, rich in dietary fiber, rich in calcium, a good source of iron, and rich in potassium.
Protein per cup (175g)
33.9
g% Daily Value
Complete Nutrition Facts for Natto
Per cup (175g)
8.6g
sugar
Essential Amino Acids in Natto
Per cup (175g)
Supplies all nine essential amino acids at or above the FAO/WHO adult reference pattern.
896mg
Histidine
1629mg
Isoleucine
2641mg
Leucine
2004mg
Lysine
364mg
Methionine
1647mg
Phenylalanine
1423mg
Threonine
390mg
Tryptophan
1782mg
Valine
More About Natto
About Protein in Natto
A serving of Natto (175g) contains 33.9g of protein, which is 68% of the recommended daily value based on a 2,000 calorie diet.
Protein is essential for building and repairing tissues, making enzymes and hormones, and supporting immune function. When planning your meals, consider that natto is a significant source of protein compared to other plant-based proteins.
Compare Protein in Similar Foods
See how Natto compares to other plant-based proteins.
Tofu
per 3 oz (85g)
6.9g
Tempeh
per 3 oz (85g)
17.3g
Lentils
per 1 cup cooked (198g)
17.8g
Black Beans
per 1 cup cooked (172g)
15.3g
Source: USDA FoodData Central | FDC ID: 172443 | Last updated: 2026-04-06
Trusted & Verified Nutritional Information
All nutritional data on Food Index is sourced from official U.S. government databases and verified by nutrition experts at leading federal agencies.
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