Veterinary doses are prescribed in milligrams per kilogram, which is precise — but translating that into a dose for your specific pet still needs arithmetic. This calculator does the conversion, leaving the prescribing to the vet.
Why doses are per kilogram
Drugs distribute through the body in proportion to mass, so prescribing per kg lets one guideline serve dogs from 3 kg to 60 kg. The arithmetic — multiply by weight, divide by daily frequency — is straightforward but error-prone when done in a hurry.
Tablets almost never match
The calculated dose rarely equals a whole tablet. Knowing the dose in mg lets you ask the vet for the right strength or a safe split, instead of rounding up — which is how accidental overdoses happen.
The calculator's boundary
The math is the easy, error-prone part this calculator removes. The medical decisions — which drug, what rate, safe splitting — sit firmly with the vet, and the calculator is built around that line.
Frequently asked questions
Multiply the dose rate (mg per kg) by the pet's weight in kg. 5 mg/kg × 20 kg = 100 mg total. Split by doses per day for each administration.
Only as your vet directs. Some tablets split evenly; others are slow-release and must not be cut. Confirm before splitting.
No. It's arithmetic on a prescribed rate. The prescription itself comes from your veterinarian — the calculator never replaces that.