Calculate daily EPA and DHA omega-3 requirements by health condition. Includes dietary fish intake, supplement dosing, cost estimates, and fish omega-3 content reference table.
The Fish Oil / Omega-3 Dosage Calculator estimates daily EPA and DHA intake based on your goal, dietary fish intake, and supplement label. It helps you translate a product label into an approximate amount of omega-3 actually being consumed.
Recommended intake depends on the use case. General health targets are lower than therapeutic doses used for triglycerides or other specific conditions. The calculator also shows how capsule strength changes the number of capsules needed.
Fish oil labels often show the total oil amount rather than the actual EPA and DHA content. This calculator helps compare supplement strength, dietary intake, and a target dose in one place.
Daily Target: condition-specific EPA+DHA (mg/day) Dietary Omega-3 = (Fish servings/week × ~500 mg) / 7 days Supplement Needed = Target − Dietary Capsules/Day = Supplement Needed / (EPA + DHA per capsule) Monthly Supply = Capsules/Day × 30 Note: standard fish oil = ~30% omega-3; concentrated = 50–90%
Result: 6–7 standard capsules/day needed (or 2–3 concentrated capsules)
Target: 2,000 mg/day EPA+DHA for cardiovascular health. Dietary: 1 fish serving/week ≈ 71 mg/day. Supplement needed: ~1,929 mg. Standard capsule (180+120=300 mg): need 7 capsules. Concentrated capsule (500+250=750 mg): need 3 capsules. The concentrated form is more practical and often more cost-effective per mg of omega-3.
The main label issue is that total fish oil amount is not the same as EPA plus DHA content. A product can list 1,000 mg of fish oil but provide much less actual omega-3, so the capsule count needs to be based on EPA and DHA rather than total oil alone.
Some products are better suited to lower daily doses, while concentrated products are easier to use when the target intake is higher. The calculator helps compare those options without converting the label by hand.
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This calculator starts with a target EPA plus DHA intake tied to the selected goal, estimates average daily omega-3 intake from weekly fatty-fish servings, and then subtracts that dietary contribution from the target to estimate how much supplemental EPA plus DHA would still be needed. It uses the EPA and DHA amounts on the supplement label rather than the total fish-oil amount to estimate capsule count, monthly supply, and cost.
The output is a label-conversion and planning aid, not a prescribing recommendation. Higher-dose omega-3 use, triglyceride treatment, anticoagulant use, pregnancy, and supplement quality questions still need clinician or pharmacist review.
EPA and DHA are both omega-3 fatty acids, but they are often discussed separately because the balance between them may matter for different goals. EPA is commonly emphasized in heart and inflammation-focused products, while DHA is often emphasized in pregnancy and brain-related use.
Higher omega-3 doses can increase side effects such as reflux, fishy burps, or gastrointestinal upset. Very high doses should be used with clinical guidance, especially if the person has bleeding risk or takes anticoagulants.
Krill oil and fish oil can both provide EPA and DHA, but the capsule strength and cost can differ a lot. Fish oil often provides more EPA+DHA per capsule, so it is easier to reach a target dose.
Purified supplements usually contain far less mercury than whole fish. Quality still depends on the manufacturer, so third-party testing can be helpful when choosing a product.
Algal oil is a vegan source of omega-3 that can provide DHA and sometimes EPA. It is a useful option when fish-derived supplements are not desired.
The chemical form can affect how much omega-3 is in each capsule and may influence absorption somewhat, but dose and consistency matter more than the label form for most users.