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How Many Calories in Mackerel?

Nutrition data reviewed against USDA FoodData Central and Public Health England guidance by our editorial team. Last reviewed: 5 September 2026.

Fact-checked against original USDA source data by our editorial team.

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205
calories per 100g
230 calories per 1 fillet (112g)
MORiSH high-protein snacks — try alongside
18.6gProtein
0.0gCarbs
13.9gFat
0.0gFibre

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⚖ Kitchen Scales

Quick reference — common serving sizes

AmountCaloriesProtein
1 oz (28g)58 kcal5.3g
100g205 kcal18.6g
1 fillet230 kcal20.8g
grams
205kcal
18.6gprotein
0.0gcarbs
13.9gfat
0.0gfibre

A mackerel contains 205 calories per 100g. A typical 1 fillet (112g) provides about 230 calories. Mackerel is high in calories and is a good source of protein. Accurate tracking starts with weighing portions — a digital kitchen scale removes all the guesswork.

Mackerel Nutrition Facts

NutrientPer 100gPer serving (112g)
Calories205 kcal230 kcal
Protein18.6g20.8g
Carbohydrates0.0g0.0g
of which Sugars0.0g0.0g
Fat13.9g15.6g
of which Saturates3.3g3.7g
Fibre0.0g0.0g
Sodium90.0mg101mg
Potassium314.0mg352mg
Calcium12.0mg13mg
Iron1.6mg1.8mg
Vitamin C0.4mg0.4mg
Vitamin A50.0µg56µg
Selenium44.1µg49µg
Riboflavin (B2)0.3mg0.3mg

% of Daily Value (per 100g)

Based on a standard 2,000-calorie reference diet — the same basis used on nutrition labels in the US and UK.

High-protein options alongside mackerel

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Have a cat or dog? Check whether mackerel is safe for your dog or safe for your cat before sharing. Also check the full ingredient breakdown and food safety guide for pregnancy and storage advice. If calorie tracking is part of a broader health check, hormone testing can rule out metabolic factors affecting your results. Tracking supplements too? Check drug and supplement interactions before combining anything new.

Good to know

Cooking method changes the final calorie and fat count more than the cut itself — grilling, baking or steaming typically adds nothing, while frying can add a meaningful amount of fat per serving.

Does mackerel fit your diet?

High-protein diets

At 18.6g of protein per 100g, mackerel clears the 15g/100g threshold generally used to call a food high-protein — a useful contributor if you're tracking protein intake for muscle maintenance, satiety, or a higher-protein eating pattern.

Low-carb / keto

Mackerel contains 0.0g of carbohydrate per 100g, low enough to fit comfortably within most low-carb or ketogenic daily carb allowances — check the fat and protein split above against your specific macro targets.

Frequently Asked Questions

How many calories in mackerel per 100g?

Mackerel contains 205 calories per 100g, based on USDA reference data.

Is mackerel high in calories?

A 1 fillet of mackerel (112g) has around 230 calories — roughly 12% of a 2,000-calorie daily intake.

Is mackerel good for weight loss?

Mackerel is fairly calorie-dense at 205 calories per 100g, so portion size matters when losing weight. A 1 fillet provides about 230 calories.

How much protein is in mackerel?

Mackerel contains 18.6g of protein per 100g.

Is mackerel a good source of fibre?

Mackerel is relatively low in fibre at 0.0g per 100g, so pairing it with fibre-rich sides (vegetables, whole grains, legumes) can help balance a meal.

How does mackerel compare to chicken, broilers or fryers, dark meat, meat only, cooked?

Mackerel has 205 calories per 100g, close to chicken, broilers or fryers, dark meat, meat only, cooked at 205 — 0 calories fewer per 100g. See the full macro breakdown above.

Is mackerel keto-friendly?

Mackerel contains 0.0g of carbohydrate per 100g, which fits comfortably within most ketogenic daily carb allowances — check it against your specific daily carb target.

How many servings of mackerel for 20g of protein?

With 18.6g of protein per 100g, you'd need roughly 108g of mackerel to reach 20g of protein

Foods with a similar calorie count

Other meat & fish closest to mackerel by calories per 100g:

FoodCaloriesProteinCarbsFat
Mackerel (this page)205 kcal18.6g0.0g13.9g
Chicken, Broilers or Fryers, Dark Meat, Meat Only, Cooked205 kcal27.4g0.0g9.7g
Chicken, Broilers or Fryers, Back, Meat Only, Cooked205 kcal25.3g0.0g11.5g
Turkey, Back, From Whole Bird, Meat and Skin, Roasted205 kcal25.8g0.0g11.4g
Beef, Rib, Eye, Small End (ribs 10-12), Cooked205 kcal28.9g0.0g9.0g
Beef, Brisket, Flat Half, Separable Lean Only, Cooked205 kcal33.3g0.0g7.0g
Beef, Brisket, Flat Half, Separable Lean and Fat, Cooked205 kcal33.6g0.0g6.8g

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Nutrition data: USDA FoodData Central (public domain, CC0 1.0). Values are per 100g unless stated.