Free 20-second tool
How much fish oil should my dog get?
Your vet gave a dose in milligrams, but your bottle is in milliliters? Convert it in one tap, or estimate the right omega-3 amount for your dog's weight.
Tired of the math? VitaDog's daily oil delivers a measured EPA+DHA dose in one dropper, balanced with the rest of the formula. See VitaDog →
Free 12-page guide
Omega-3 is one lever. Here's the whole picture.
Fish oil helps skin, coat, joints and inflammation, but a longer, healthier life comes from the full stack: gut, joints, cognition and more. Our free Longevity Guide walks through all of it.
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This tool does the arithmetic for you, it is not a prescription. Conversions assume a typical fish-oil density of about 0.92 g/mL. Weight-based figures are general wellness guidance drawn from published canine ranges, not a dose for treating a medical condition. Always follow your veterinarian's instructions, especially for higher therapeutic doses, and watch for soft stools or, at very high intakes, effects on blood clotting.
How to convert a fish oil dose from mg to mL
Vets usually prescribe fish oil in milligrams, but bottles and syringes are marked in milliliters, which is where owners get stuck. The trick depends on what the milligrams refer to. If your vet meant milligrams of the oil itself, you can convert by weight: fish oil weighs about 0.92 grams per milliliter, so 1 mL is roughly 920 mg of oil. That means a 1,400 mg dose is about 1.5 mL.
Oil weight vs omega-3 content
If your vet meant milligrams of omega-3 (the EPA + DHA, the active part), then milliliters depend on how concentrated your specific product is. Check the label for something like "300 mg EPA+DHA per mL" or "per serving", then divide the prescribed amount by that number. A 1,000 mg EPA+DHA target from a 300 mg/mL oil is about 3.3 mL.
How much omega-3 does a dog need?
The clinically supported range is about 50 to 75 mg of combined EPA + DHA per kg of body weight per day (roughly 23 to 34 mg per lb) for general wellness, joints and skin. Diagnosed inflammatory conditions are often taken up to around 100 mg/kg under veterinary guidance. Because high intakes can affect blood clotting, anything beyond general wellness should be set by your vet. Our full fish oil dosage guide breaks it down by weight band.
Want the omega-3 already measured and balanced with the rest of what your dog needs? The oil blend guide covers how VitaDog delivers EPA + DHA in a daily oil dropper, no math required.
Common questions
My vet said 1400 mg of fish oil, how many mL is that?
If that is milligrams of the oil itself, about 1.5 mL (fish oil weighs roughly 920 mg per mL). If your vet meant 1400 mg of omega-3 (EPA+DHA), it depends on your product's strength, divide 1400 by the mg of EPA+DHA per mL on your label. When in doubt, ask the vet which they meant.
How do I measure mL without a syringe?
Most fish oil bottles include a dropper, and one full dropper is usually about 1 mL. A standard kitchen teaspoon is about 5 mL. An oral syringe from any pharmacy is the most accurate.
Can I give my dog too much fish oil?
Yes. Mild excess causes loose stools; very high doses over time can interfere with blood clotting and add unwanted calories. Stay within your vet's dose and don't stack multiple omega-3 products without checking.
Is human fish oil ok for dogs?
Plain fish oil with no added flavors, sweeteners (especially xylitol) or vitamins added for humans can be used, but dosing is easy to get wrong. A product formulated and dosed for dogs removes the guesswork.
