Omega-3 for Dogs Calculator — EPA+DHA Daily Dose
Omega-3 fatty acids (EPA and DHA) support dogs' coat, joints, heart and brain. This calculator converts your dog's weight and your target dose per kilogram into a daily EPA+DHA requirement, then tells you how many fish oil capsules or teaspoons of liquid oil to use.
kg
mg/kg/day
mg/g
Total combined EPA and DHA your dog needs each day
- 1
EPA+DHA concentration in fish oil
300 mg EPA+DHA per g = 300 mg/g - 2
Daily EPA+DHA = weight × dose rate
20 × 50 = 1,000Requires 3.33 g of fish oil (4 standard capsules/day).
How does this calculator work?
Daily EPA+DHA (mg) = dog's weight (kg) × dose rate (mg/kg/day). Maintenance is typically 20–50 mg/kg/day; therapeutic doses reach 75–150 mg/kg/day under vet supervision. Divide by your fish oil's EPA+DHA concentration (e.g., 300 mg/g for standard capsules) to get the grams needed, then round up to whole capsules. Always confirm with your veterinarian.
Formula
How this is calculated
Omega-3 dosing for dogs is based on combined EPA (eicosapentaenoic acid) and DHA (docosahexaenoic acid) content, not total fish oil weight. A standard 1,000 mg fish oil capsule typically provides around 180 mg EPA and 120 mg DHA, giving 300 mg EPA+DHA per capsule — but concentrations vary widely, so always check the supplement label.
Veterinary nutritionists generally recommend 20–50 mg combined EPA+DHA per kg body weight per day for maintenance (skin, coat and general anti-inflammatory support), and 75–150 mg/kg/day for therapeutic uses such as joint inflammation, cardiac conditions or kidney disease. The National Research Council's adequate intake for dogs is 0.11 g EPA+DHA per 1,000 kcal, but the per-kg approach used here is more practical for supplementation. These are consensus estimates — individual requirements depend on diet, health status and concurrent medications.
The calculator divides the daily dose by the EPA+DHA concentration in your fish oil product to give the grams of oil needed, then rounds up to whole capsules. Always confirm the supplementation plan with your veterinarian, especially at therapeutic doses, as very high omega-3 intake can affect platelet function and interact with certain medications.
Frequently asked questions
Maintenance doses (20–50 mg EPA+DHA/kg/day) support general health — coat condition, mild anti-inflammatory benefits and brain function. Therapeutic doses (75–150 mg/kg/day) are used under veterinary guidance for specific conditions such as osteoarthritis, chronic kidney disease or dilated cardiomyopathy, where higher levels of omega-3 have shown clinical benefit.
The bioactive components are EPA and DHA — not the total oil. A 1,000 mg capsule can contain anywhere from 180 mg to 600+ mg of EPA+DHA depending on the product, so using total capsule weight would give misleading results. Always check the product label for combined EPA+DHA content and enter that figure.
Omega-3 supplements are generally safe at maintenance doses, but high therapeutic doses can slow blood clotting, which matters before surgery or in dogs on anticoagulants. Fish oil can also go rancid and cause gastrointestinal upset if stored poorly. Always use a veterinary-grade or human-grade product with verified EPA+DHA content and confirm dosing with your vet.
Also known as
TG we-Calculate Editorial Team. (2026). Omega-3 for Dogs Calculator — EPA+DHA Daily Dose [Online calculator]. TG we-Calculate. https://we-calculate.com/calculator/omega-3-for-dogs-calculator
TG we-Calculate Editorial Team. "Omega-3 for Dogs Calculator — EPA+DHA Daily Dose." TG we-Calculate. 2026. https://we-calculate.com/calculator/omega-3-for-dogs-calculator.
TG we-Calculate Editorial Team, "Omega-3 for Dogs Calculator — EPA+DHA Daily Dose," TG we-Calculate, 2026. [Online]. Available: https://we-calculate.com/calculator/omega-3-for-dogs-calculator
@misc{wecalculate_omega_3_for_dogs_calculator, title = {Omega-3 for Dogs Calculator — EPA+DHA Daily Dose}, author = {{TG we-Calculate Editorial Team}}, howpublished = {\url{https://we-calculate.com/calculator/omega-3-for-dogs-calculator}}, year = {2026}, note = {TG we-Calculate} }
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