Free Veterinary Clinical Tool
Veterinary Drug Dose Calculator
mg/kg ยท Tablets ยท Liquids ยท Injections
Enter weight, dose per kg, concentration and frequency โ get instant, copy-ready results for dogs, cats and all animals. Need doses? Browse Vet Drugs List โ
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mg/kg & ฮผg/kg
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Tablets, Liquids & Injections
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Copy & Print
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kg โ lb
๐ Free Vet Drug Doses PDF โ complete mg/kg dosing tables for small & large animals.
Download Free โ๐
Calculate Drug Dose
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How It Works
- 1Enter patient weight and choose kg or lb โ or convert instantly.
- 2Enter the dose per kg in mg/kg or ฮผg/kg.
- 3Select dosage form and enter the concentration.
- 4Pick a frequency or enter a custom interval in hours.
- 5Hit Calculate โ then copy or print the result.
๐ Dose Formulas
Total dose (mg)weight(kg) ร mg/kg
Volume (mL)total mg รท mg/mL
Tabletstotal mg รท mg/tab
Daily totalper dose ร doses/day
ฮผg/kg โ mg/kgรท 1000
lb โ kgรท 2.2046
โ๏ธ Educational & Clinical Estimation Tool
Intended for use by veterinary professionals as a dosing aid only. Always verify doses against current formularies, the patient's clinical condition, organ function, and concurrent medications. Do not rely solely on this tool for clinical decisions.
References & Recommended Reading
Verify Dosing with Authoritative Sources
Always cross-check calculated doses with trusted formularies and clinical references.
๐ Formularies
๐ Evidence-based
๐งโโ๏ธ Vet-focused
๐ Editor's Picks
Plumb's Veterinary Drug Handbook
Quick dosing & drug interactions
BSAVA Small Animal Formulary 11th Ed.
Concise drug monographs
Veterinary Pharmacology & Therapeutics
In-depth pharmacology reference
Saunders Handbook of Veterinary Drugs
Practical dosing tables
Need full-text references? Instant access to 3,000+ veterinary books.
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Frequently Asked Questions
Multiply the patient weight in kg by the dose in mg/kg to get total mg per dose. Divide that by the concentration (mg/mL or mg/tablet) to get volume in mL or number of tablets. This calculator automates all those steps.
mg/kg means milligrams of drug per kilogram of body weight. This weight-based method ensures each patient receives a dose scaled to their size โ essential in veterinary medicine where patients range from a 0.5 kg hamster to a 700 kg horse.
Divide the ฮผg/kg value by 1000. For example, 100 ฮผg/kg = 0.1 mg/kg. This calculator handles the conversion automatically when you select ฮผg/kg as your unit.
Divide the required dose in mg by the drug concentration in mg/mL. Example: a 10 kg dog at 5 mg/kg using a 25 mg/mL solution needs 50 mg รท 25 mg/mL = 2 mL. Select Liquid or Injection and enter concentration in mg/mL.
These are frequency abbreviations: q24h = once daily, q12h = twice daily, q8h = three times daily, q6h = four times daily. Use the Custom option to enter any other interval in hours between doses.
Tablets are rounded to the nearest ยผ tablet increment. This calculator rounds to the nearest ยผ and also shows the exact calculated value so you can decide what is clinically appropriate for each patient.