A standard serving of cooked salmon is 3 ounces, or about 84 grams. That’s the reference amount used by the FDA for nutrition labeling and the basis for most dietary recommendations. It’s smaller than many people expect, roughly the size of a checkbook or the palm of your hand.
What 3 Ounces Actually Looks Like
Three ounces of cooked salmon doesn’t take up much space on a plate. A useful visual: it’s about the size of a standard checkbook, or three-quarters of a cup if you’re working with flaked or canned salmon. If you’re buying a typical restaurant fillet, that portion is usually 6 to 8 ounces, meaning two to nearly three servings.
Keep in mind that salmon shrinks during cooking. A 4-ounce raw fillet will cook down to roughly 3 ounces as it loses moisture and fat. So if you’re portioning raw salmon at home without a scale, aim for a piece slightly larger than your palm.
Calories and Protein Per Serving
A 3-ounce serving of cooked wild salmon provides around 182 calories. Farmed Atlantic salmon runs slightly higher at about 206 calories for a 3.5-ounce portion, since farmed fish carries more fat. Both types deliver roughly 20 to 25 grams of protein per serving, making salmon one of the most protein-dense foods you can eat relative to its calorie count.
Omega-3 Content by Type
The omega-3 fatty acids in salmon are the main reason health organizations single it out among protein sources. But the amount varies significantly depending on what kind of salmon you’re eating.
Three ounces of cooked farmed Atlantic salmon contains about 1.24 grams of combined omega-3s (EPA and DHA), while the same serving of wild Atlantic salmon provides around 1.22 grams. Canned pink salmon delivers about 0.91 grams of omega-3s per 3-ounce drained portion. All three easily exceed the levels found in most other common fish.
How Many Servings Per Week
The Dietary Guidelines for Americans recommend 8 ounces of seafood per week for adults on a 2,000-calorie diet. That works out to about two and a half standard servings, or roughly two meals that include salmon or other fish. The American Heart Association is more specific: two servings of fatty fish per week, with salmon listed as a top choice.
For pregnant or breastfeeding women, the recommendation is 8 to 12 ounces of seafood weekly, chosen from lower-mercury varieties. Salmon falls squarely in that safe category. Children can eat 2 to 3 ounces per week from the FDA’s “Best Choices” list, which includes salmon.
Mercury Levels in Salmon
Salmon is one of the lowest-mercury fish you can buy. Fresh and frozen salmon averages just 0.022 parts per million of mercury, and canned salmon is even lower at 0.014 ppm. For comparison, high-mercury fish like swordfish and king mackerel can exceed 0.7 ppm. This is why salmon appears on every “safe fish” list for children and pregnant women, and why there’s no practical upper limit on salmon consumption based on mercury alone.
Adjusting Portions for Your Goals
The 3-ounce standard is a reference point, not a rule. If you’re eating salmon as your main protein at dinner, 4 to 6 ounces (one to two servings) is a reasonable portion for most adults. Athletes or people with higher calorie needs might eat 6 to 8 ounces comfortably.
If you’re tracking your intake, weigh cooked salmon rather than raw. Nutrition labels and databases almost always report values for the cooked weight, so weighing it raw will throw off your numbers. A simple kitchen scale takes the guesswork out entirely, but the checkbook comparison works well enough for everyday meals.