Natto leads 7–3 · 10 categories decided
Both foods compared at 100 kcal.
The verdict
Natto comes out ahead, winning 7 of 10 nutrient match-ups.
Pick Black beans, canned for more fiber, less sugar and less saturated fat.
Pick Natto for more protein, less sodium, more potassium, more calcium, more iron, more magnesium and more vitamin C.
Head-to-head
- Energy100 kcal100 kcal
- Proteinmore is better6.63 g9.19 gWIN
- Carbohydrate18.19 g6.01 g
- Fibermore is betterWIN7.58 g2.56 g
- Total sugarsless is betterWIN0.25 g2.32 g
- Total fat0.32 g5.21 g
- Saturated fatless is betterWIN0.08 g0.75 g
- Sodiumless is better151.65 mg3.32 mgWIN
- Potassiummore is better338.46 mg345.5 mgWIN
- Calciummore is better38.46 mg102.84 mgWIN
- Ironmore is better2.09 mg4.08 mgWIN
- Magnesiummore is better38.46 mg54.5 mgWIN
- Vitamin Cmore is better2.97 mg6.16 mgWIN
- Vitamin Dmore is better——
Winners are decided by deterministic per-metric rules on the stated basis; ties and missing data don’t score (missing ≠ zero). Educational information only — not medical advice.

