Fish Oil Bottle Duration Calculator for Dogs
Figure out how many days a bottle will last for your dog based on their weight, your product's EPA+DHA concentration, bottle size, and pump size.
Calculator
Use the label on your current bottle. The key number is combined EPA+DHA per ml.
Default assumptions match the dosing logic on our fish oil dosage calculator: 50 mg/kg for maintenance and 100 mg/kg for therapeutic use.
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Why this calculator matters
Most dog fish oil shoppers do not just want to know the dose. They want to know whether one bottle lasts two weeks or two months. That is the practical question behind a lot of buying decisions.
This tool helps you compare products on the metrics that actually matter:
- How many days a bottle lasts for your dog's weight
- How many pumps you will realistically use each day
- How much the supplement costs per day, if you know the bottle price
How to read the label correctly
The tricky part is that fish oil labels are inconsistent. Some list combined omega-3s per teaspoon, some per pump, and some only give the total oil amount. What you want here is combined EPA + DHA per ml.
- If your label lists EPA + DHA per pump, divide that number by the ml in one pump.
- If your label lists EPA + DHA per teaspoon, divide by 5 to get a per-ml number.
- If your label only lists total fish oil, that is not enough. Total oil is not the same as EPA + DHA.
Need the actual daily dose first?
Use the dosage calculator if you want the EPA+DHA target, daily ml, and pump count for your dog's weight before comparing bottle longevity.
Open dosage calculator →Quick example
If your dog weighs 40 lb, your bottle provides 150 mg EPA+DHA per ml, and each pump dispenses 1.5 ml, the maintenance dose lands around 6 pumps per day and the therapeutic dose around 12 pumps per day. Bottle longevity then depends on total bottle size.
That is exactly why a bottle-duration calculator is useful: two brands can look similar on the front label but behave very differently once you work out the real daily use.
Important note
These are educational estimates, not a substitute for veterinary advice. Dogs with clotting disorders, pancreatitis history, GI sensitivity, or prescription diets may need a different dosing approach.