💊 Pet Medicine Dosage
A simple arithmetic helper that turns a vet-prescribed mg/kg rate into a per-dose, per-day, and millilitre figure. It is educational only — always confirm any medication and dose with your veterinarian, and never medicate a pet without professional guidance.
🔧 Calculate a Prescribed Dose
What is the Pet Medicine Dosage Tool?
This tool is a calculator, not an advisor. When your veterinarian prescribes a medication at a given milligram-per-kilogram rate, it multiplies that rate by your pet's weight to show the milligrams per dose, the total per day, and — if you provide the concentration — the millilitres to measure for a liquid.
It exists to help you double-check a prescribed dose and reduce measuring errors at home, not to choose drugs or doses. Always confirm every medication and dose with your veterinarian, follow the product label, and never give a pet anything without professional guidance — many common substances are dangerous to animals.
📖 How to Use the Pet Medicine Dosage Tool
1Get the Prescription from Your Vet
Start with the medication, the mg/kg rate, and the dosing frequency your veterinarian has prescribed for your specific pet. This tool does not provide any of those — it only does the math once you have them.
2Enter Weight and Dose Rate
Type your pet's current weight in kilograms and the prescribed mg/kg rate. Use an accurate, recent weight, since the dose scales directly with it.
3Add Concentration for Liquids
For a liquid or suspension, enter the concentration in mg/mL from the label so the tool can show the volume to measure. Leave it blank for tablets or capsules.
4Check Against the Label
Compare the calculated per-dose, daily, and volume figures with your vet's written instructions and the product label before giving anything. If they don't match, stop and call your veterinarian.
❓ Frequently Asked Questions
Does this tool tell me what medicine or dose to give my pet?
No, and it deliberately never will. This is purely an arithmetic helper: your veterinarian supplies the medication and the mg/kg rate, and the tool simply multiplies that out by your pet's weight. It is educational only — always confirm any medication and dose with your veterinarian, and never medicate a pet without professional guidance. Many human and over-the-counter drugs are toxic to dogs and cats even in small amounts.
How do I convert milligrams to millilitres for a liquid medication?
Enter the concentration printed on the bottle in milligrams per millilitre, and the tool divides the dose in milligrams by that concentration to give the volume in millilitres. Concentrations vary widely between products and even between strengths of the same drug, so always read the specific label you're holding. If the number it returns doesn't match your vet's written instructions, stop and call your vet before giving anything.
Why does my pet's exact weight matter so much?
Doses are calculated per kilogram of body weight, so an inaccurate weight produces an inaccurate dose — a serious problem for small pets and for drugs with a narrow safety margin. Use the most recent weight from a reliable scale rather than an estimate, and reweigh growing animals often. When in doubt, have the clinic weigh your pet, since a few hundred grams can change the dose for a tiny patient.
Is it ever safe to adjust a dose myself based on this calculator?
No. Use this tool only to double-check a dose your veterinarian has already prescribed, never to start, stop, or change a medication on your own. Drug interactions, organ function, age, pregnancy, and underlying conditions all affect safe dosing in ways a calculator cannot capture. If you think a dose seems wrong, contact your veterinary clinic or an animal poison control line rather than guessing.