Convert a weight-based medication instruction into an estimated daily active-ingredient requirement and administration volume. Enter the prescribed dose in milligrams per kilogram, pet weight, doses per day, and product concentration. The calculator keeps the prescribed inputs visible and performs the arithmetic; it does not select a drug, diagnose a condition, or replace veterinary dosing instructions.
mg per dose = weight (kg) × prescribed mg/kg/dose. Daily mg = mg per dose × doses per day. mL per dose = mg per dose ÷ concentration (mg/mL).
The main result is total active ingredient per day. Secondary results show the per-dose active ingredient and the liquid volume implied by the entered concentration.
Medication errors can be dangerous. Do not use this calculator to create or change a dose; contact a veterinarian or pharmacist if the label, units, or result do not match the prescription.
For an 8 kg pet prescribed 2.5 mg/kg twice daily using 10 mg/mL liquid: each dose is 20 mg or 2 mL, and the daily total is 40 mg or 4 mL.
No. It only calculates from a dose already prescribed by a veterinarian.
Convert the pet’s weight to kilograms before using this calculator; 1 kilogram is approximately 2.2046 pounds.
Concentration converts the prescribed active ingredient in milligrams into a liquid volume in milliliters.
This liquid-volume calculation does not apply directly. Ask the prescribing clinic how the tablet strength should be administered.
Only round according to the measuring device and instructions supplied by the veterinarian or pharmacist.
| Variable | Meaning | Unit |
|---|---|---|
| Weight | Current body weight | kg |
| Dose rate | Prescribed active ingredient per kg per dose | mg/kg/dose |
| Frequency | Administrations each day | doses/day |
| Concentration | Active ingredient in each mL | mg/mL |