Bluefin tuna, cooked leads 5–3 · 8 categories decided · 1 tie
Both foods compared at 100 kcal.
The verdict
Bluefin tuna, cooked comes out ahead, winning 5 of 8 nutrient match-ups.
Pick Bluefin tuna, cooked for more protein, less saturated fat, less sodium, more potassium and more iron.
Pick Mackerel, cooked for more calcium, more magnesium and more vitamin C.
Evenly matched on fiber.
Head-to-head
- Energy100 kcal100 kcal
- Proteinmore is betterWIN16.26 g9.1 g
- Carbohydrate0 g0 g
- Fibermore is better0 g0 g
- Total sugarsless is better——
- Total fat3.41 g6.8 g
- Saturated fatless is betterWIN0.88 g1.59 g
- Sodiumless is betterWIN27.17 mg31.68 mg
- Potassiummore is betterWIN175.54 mg153.05 mg
- Calciummore is better5.43 mg5.73 mgWIN
- Ironmore is betterWIN0.71 mg0.6 mg
- Magnesiummore is better34.78 mg37.02 mgWIN
- Vitamin Cmore is better0 mg0.15 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.

