Keto Approved
Mackerel (Atlantic)
0.00g net carbs per 3.5 oz
One of the fattiest fish, excellent omega-3 and zero carbs.
Built by Barron Hansen · Last updated July 2026
Nutrition Facts
Fits My Daily Budget?
Set your daily net carb limit to see how one serving fits.
One serving uses 0% of your 20g daily budget.
Plan the rest of your day
Good to Know
Fresh fillets should smell clean and briny, not fishy, with firm flesh and shiny skin. Canned versions are an easy pantry option, but check the label: plain mackerel packed in water or olive oil stays at 0 g carbs, while teriyaki or tomato-sauce tins can sneak in added sugar. With 13.9 g of fat and 18.6 g of protein per serving, a single fillet works as a quick lunch over greens, no breading needed.
Is Mackerel (Atlantic) Keto? The Full Answer
Mackerel contains 0.00g net carbs per 3.5 oz (0.00g total carbs minus 0.00g fiber). One of the fattiest fish, excellent omega-3 and zero carbs.
On a standard ketogenic diet, most people target 20-25g net carbs per day. A single serving uses 0% of a 20g daily carb limit. That makes Mackerel a reliable keto staple.
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