Salmon and sardines look very different on the plate, yet both deliver substantial protein and meaningful amounts of EPA and DHA. The useful question is not which fish wins permanently, but what each contributes in the form you actually eat.
A practical comparison per 100 g
| Nutrient | Cooked Atlantic salmon | Canned sardines, drained |
|---|---|---|
| Calories | ~180–210 | ~185–210 |
| Protein | ~20–23 g | ~24–25 g |
| Fat | ~10–13 g | ~10–12 g |
| EPA+DHA | ~1.8–2.2 g | ~1.3–1.5 g |
NIH lists 1.83 g EPA+DHA in 3 oz of cooked farmed Atlantic salmon and 1.19 g in 3 oz of canned sardines in tomato sauce, drained. Converted to 100 g, that is roughly 2.15 g versus 1.40 g.
Sardines can edge higher in protein
Many drained sardine products provide roughly 24–25 g protein/100 g because the canned fish is relatively concentrated. Cooked salmon commonly sits around 20–23 g/100 g. Across a 4-ounce serving, that is roughly 27–28 g protein from sardines versus about 23–26 g from salmon.
Calories can be much closer than expected
Fatty salmon and drained sardines can both fall around 190–210 calories per 100 g. Canning medium matters: sardines that retain more oil can be higher, while a well-drained tomato-sauce product can land differently.
Salmon often has more EPA+DHA, but sardines are still concentrated
Using the NIH examples, salmon provides about 0.75 g more EPA+DHA per 100 g, roughly 54% more. Sardines still easily clear 1 g EPA+DHA per 100 g in many references.
Edible bones give sardines a separate advantage
When the soft bones are eaten, canned sardines can provide several hundred milligrams of calcium per 100 g. A boneless salmon fillet contains only a small fraction of that amount. The difference comes from eating the mineralized bones, not from a special property of sardine flesh.
Sodium, species, and packing liquid matter
Canned sardine sodium depends on added salt and sauce. Fresh salmon is naturally much lower in sodium before seasoning. Omega-3 content also changes with salmon species, wild versus farmed production, and feed.
The useful takeaway
Both salmon and sardines are strong protein and marine omega-3 foods. Atlantic salmon generally provides more EPA+DHA per 100 g; canned sardines can provide slightly more protein and dramatically more calcium when the bones are eaten. For calories, check the specific product and packing oil.
Choosing between them at the grocery store
For most shoppers, the biggest difference is format. Salmon is commonly sold as a fillet or portion that becomes the center of a meal, whereas sardines are usually canned and ready to eat. That makes sardines unusually efficient pantry protein: open the tin and they can go onto toast, crackers, salads, pasta, or grain bowls. Salmon requires more cooking or reheating, but it offers a milder texture and a larger single portion that many people find easier to build dinner around.
Sodium deserves attention when canned sardines are compared with plain salmon. Salt, sauces, and packing liquids can move the sodium number substantially from one tin to another. A plain cooked salmon fillet may be relatively low in sodium before seasoning, while canned sardines can contain much more because salt is part of the product. If sodium matters to you, compare labels rather than assuming every can is the same. Draining can remove some packing liquid but does not erase sodium already present in the fish.
Calcium is where bone-in sardines separate themselves from typical salmon fillets. The small bones soften during canning and are usually eaten along with the flesh, turning something that would normally be discarded into a significant calcium source. Boneless sardines lose much of that advantage. Canned salmon can also provide calcium when edible bones are included, so the package description matters more than the species name by itself.
Omega-3 comparisons should also stay tied to the specific form. Species, feed, season, cooking, and packing medium all affect the final number. The NIH examples show both foods as meaningful EPA-and-DHA sources, but they should not be converted into a universal promise for every fillet and every tin. When the goal is simply to eat oily fish regularly, alternating between salmon and sardines can be more practical than chasing a tiny numerical winner.
Cost and waste can decide the choice just as strongly as nutrition. Sardines are shelf-stable until opened and usually come in a single-use portion, which reduces the risk of forgetting fresh fish in the refrigerator. Salmon is more versatile for people who prefer a conventional entrée and can be batch-cooked for several meals. Nutritionally, both are strong options; the better purchase is often the one you will actually eat, in a format and seasoning level that fit the rest of your diet.
Sources
- NIH Office of Dietary Supplements — Omega-3 Fatty Acids — EPA and DHA amounts in salmon and sardines and variability among fish.
- USDA FoodData Central — Cooked fish and canned seafood composition per 100 g.