WellByNumbers.

Mackerel (cooked) vs Salmon (cooked)

Mackerel (cooked)Salmon (cooked)
Protein · per 100 g23.9 g22.1 g
Carbs · per 100 g0.0 g0.0 g
Fat · per 100 g17.8 g12.3 g
Fiber · per 100 g0.0 g0.0 g
Energy · per 100 g262.0 kcal206.0 kcal
Protein · per 100 kcal9.1 g10.7 g
To hit 30 g protein126 g · 330 kcal136 g · 280 kcal

The same three numbers, drawn

Protein / 100 g23.922.1Fiber / 100 g0.00.0Protein / 100 kcal9.110.7MackerelSalmon

What 30 g of protein looks like on a plate

126 gMackerel330 kcal rides along136 gSalmon280 kcal rides alongsquare area drawn to scale · grams needed for 30 g protein

Where the calories come from

protein 37%fat 63%
protein 44%fat 56%

The one-line verdict: Salmon (cooked) delivers 1.2× the protein per calorie of Mackerel (cooked) (10.7 g vs 9.1 g per 100 kcal).

More protein / 100 g: MackerelLighter per 100 g: SalmonSmaller 30 g portion: Mackerel

Swap in your own pair

Bold marks the better side of each row. "Per 100 kcal" answers the density question — which food delivers more protein for the energy it costs. Portion row is computed live from the same USDA base values shown on each food page.