50
mg
1
mL
100
mg
700
mg
14
mL
50
mg
1
mL
100
mg
700
mg
14
mL
The Pet Medication Dosage Calculator computes the correct drug dose for animals based on body weight, prescribed dose rate, and drug concentration. Accurate medication dosing is critical in veterinary medicine because under-dosing can be ineffective while over-dosing can be toxic. This tool calculates both the mass (mg) and volume (mL) of each dose, daily totals, and the entire course requirement.
This calculator is intended as a reference tool for veterinary professionals and informed pet owners. Always confirm dosing with your veterinarian, as individual animals may require adjusted doses based on health status, age, breed, and concurrent medications.
The calculator applies standard veterinary dosing formulas:
These calculations follow the same pharmacological principles used in human medicine, scaled to the animal's body weight. The dose rate (mg/kg) is species-specific and drug-specific, as prescribed by a veterinarian.
Inputs
Results
A 10 kg dog prescribed 10 mg/kg amoxicillin twice daily for 7 days needs 2 mL per dose and 28 mL total.
Inputs
Results
A 5 kg cat on 0.1 mg/kg meloxicam once daily needs just 0.33 mL per dose from a 1.5 mg/mL solution.
This calculator works for any medication where the dose is expressed as mg per kg of body weight and the drug concentration is in mg per mL. However, some medications have dose caps (maximum absolute doses regardless of weight), require loading doses, or have non-linear pharmacokinetics. Always follow your veterinarian's specific instructions for each medication.
For weight-based dosing, use the animal's exact weight rather than rounding to the nearest label bracket. This calculator gives a precise dose for any weight. If you are using pre-packaged doses (tablets), your veterinarian can advise whether to round up or down based on the specific drug's safety margin.
When administering liquid medications, you measure by volume (mL) using a syringe, not by mass (mg). The dose in mL depends on the drug's concentration. Two different formulations of the same drug may require very different volumes. Always check the concentration on the label and verify the volume with this calculator or your veterinarian to ensure correct dosing.
Roboculator Team
The Roboculator Team explains calculations, planning tools, and practical formulas in clear language for real-life situations.
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