Home / Plant Proteins / Natto
CNatto
Fermented whole soybeans · Soy Foods
Graded C — 40 out of 100, #12 of 15 plant proteins. Clean label carries the score (96/100); protein quality (diaas) drags it down (0/100).
The short version: Soybeans that went feral. Stringy, stinky, superb.
The catch: Famously high in vitamin K2, which isn't in our micronutrient panel.
Photo: Wikimedia Commons
Nutrition facts
Nutrition Facts
Why it scored 40
Each factor is scored 0–100, then combined with the weights shown. Read the full methodology.
Where it ranks
#12 of 15 in Plant Proteins. Why per-100-calorie scoring changes everything →
More soy foods
Questions people ask
Is Natto healthy?
It grades C — 40 out of 100, #12 of 15 plant proteins in our system. Soybeans that went feral. Stringy, stinky, superb.
How many calories are in Natto?
211 calories per 100g. For context, that is scored per 100 calories here, which is why energy-dense foods can grade lower than you’d expect.
How is the nutrition score for Natto calculated?
Each factor (protein, fiber, micronutrients, and others depending on the category) is scored 0–100 against a fixed benchmark, then combined with published weights. See the score breakdown above or read the full methodology.