Fish Oil Dosage for Cats Calculator

Use our fish oil dosage for cats calculator to estimate a daily fish oil amount (mg/day) from your cat’s weight. Includes a simple dosage chart and FAQs about how often to give fish oil and what fish oil is good for cats.

Your cat's weight (lb)
Enter your cat’s weight in pounds (lb).
Results
Fish oil dosage (mg/day)
Estimated daily EPA + DHA dose based on weight (simple midpoint rule).
This estimate is for EPA + DHA (combined), not total fish oil. Confirm dosing with your veterinarian.
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Is Fish Oil Good for Cats?

Fish oil contains omega-3 fatty acids (mainly EPA and DHA). Veterinarians often recommend omega-3s to support skin and coat health and to help manage inflammation-related issues in some cats.

The right fish oil dosage for cats depends on your cat’s weight and the product’s strength. Some products list total fish oil mg, while others list EPA + DHA mg. This calculator provides a simple daily mg estimate based on body weight.

If your cat has a health condition or takes medications (especially blood thinners), ask your veterinarian before starting fish oil.

Fish Oil Dosage Chart for Cats

Quick reference daily estimate by weight (mg/day).

Cat weight (lb)Fish oil dosage (mg/day)
5250
7.5375
10500
12600
15750
18900
201000

How to Use This Calculator

  1. 1

    Enter your cat’s weight (lb).

  2. 2

    Read the estimated fish oil dosage (mg/day).

  3. 3

    Match that mg/day amount to your product label and measure the equivalent portion.

  4. 4

    Start low and follow your veterinarian’s guidance for your cat’s specific needs.

Frequently Asked Questions

How much fish oil for cats per day?

It depends on weight and the product’s concentration. This calculator provides a daily mg estimate from your cat’s weight so you can match it to your label.

How often should I give my cat fish oil?

Many owners give fish oil once daily with food. Some cats do better with the daily amount split into smaller servings. Follow your veterinarian’s guidance.

How much fish oil is safe for cats?

Safety depends on dose, your cat’s health, and the product. Too much can cause digestive upset and may affect bleeding risk in some situations. If your cat has medical conditions or takes medications, ask a vet before supplementing.

Can I give my cat fish oil pills?

Some cats can take capsules, but many owners use liquid mixed into food. If using pills, confirm the strength and make sure the product is intended for pets or approved by your vet.

What fish oil is good for cats?

Look for products with clear labeling, good quality control, and a known EPA/DHA content. Your veterinarian can recommend a reliable option and target dose for your cat.