Omega-3s are essential fats the body cannot make in meaningful amounts, so the plate has to supply them. Below is a ranked list of food sources ordered by omega-3 amount per 100g.
Flaxseed — the top-ranked source
| Total Fat | 37.3 g |
|---|---|
| Saturated Fat | 3.28 g |
| Sodium | 36.7 mg |
| Potassium | 793 mg |
| Total Carbohydrate | 34.4 g |
| Dietary Fiber | 23.1 g |
| Total Sugars | 1.6 g |
| Protein | 18 g |
If you want a practical starting point for eating more Omega-3, ranked lists are useful because the best options are often not the most obvious ones. The foods below are ordered by Omega-3 amount per 100g g drawn from the foods in our database.
Remember: ranking by one nutrient is only one way to choose foods. Pairing matters too. Use the Omega-3 compound page to understand absorption, forms and interactions.
Top 15 Omega-3 foods
- Flaxseed — 19.4 g per 100g. Thiamine, magnesium, lignans
- Mackerel — 2.30 g per 100g. Omega-3 (EPA & DHA), vitamin D, vitamin B12
- Salmon (Atlantic) — 1.44 g per 100g. Omega-3 EPA & DHA, vitamin D, vitamin B12
- Sardines — 0.98 g per 100g. Omega-3, calcium (with bones), vitamin D
- Rainbow Trout — 0.79 g per 100g. Omega-3 (EPA & DHA), vitamin B12, vitamin D
- Extra Virgin Olive Oil — 0.65 g per 100g. Vitamin E, vitamin K, oleocanthal polyphenols
- Mussels — 0.44 g per 100g. Vitamin B12, iron, selenium
- Tuna (canned, light) — 0.23 g per 100g. Selenium, vitamin B12, niacin
- Cod — 0.18 g per 100g. Selenium, vitamin B12, iodine
- Cheddar Cheese — 0.13 g per 100g. Calcium, protein, vitamin B12
- Scallops — 0.11 g per 100g. Vitamin B12, selenium, phosphorus
- Eggs — 0.09 g per 100g. Choline, vitamin B12, vitamin D
How to actually eat more Omega-3
A handful of additions usually move the needle more than a full diet reset. Omega-3 is best consumed from whole foods rather than supplements whenever possible. Try adding one new source each week, track how you feel, and build from there rather than forcing every meal to hit a target.
For broader context, see our Heart Health hub and the Omega-3 compound page.
Common questions
How much Omega-3 do I need a day? Needs differ by age, sex, life stage and health status. The figures here are not prescriptions; use them to compare foods, then apply your own context.
Are supplements better than food sources? Not automatically. Food provides co-factors such as fibre, fat and other micronutrients that help the body use Omega-3 effectively. Supplements are useful for filling confirmed gaps.