Free Pet Health Tools
Science-backed calculators for pet owners and veterinary professionals. Every tool is free, mobile-friendly, and powered by peer-reviewed veterinary research.
Puppy Weight Calculator
Predict your puppy’s adult weight using scientifically validated growth curves from WALTHAM research. Enter breed, age, and current weight.
Use CalculatorDog Age Calculator
Convert your dog's age to human years using the latest epigenetic research from UC San Diego. Adjusted for breed size.
Use CalculatorCat Age Calculator
Find your cat's age in human years using the AAHA/AAFP-endorsed formula. Includes life stage and health recommendations.
Use CalculatorPet Calorie & Food Calculator
Calculate daily calorie needs for dogs and cats using the NRC 2006 formula. Get food portion estimates based on your pet's food.
Use CalculatorKitten Weight Chart
Interactive growth chart for kittens from birth to 12 months. Track your kitten's weight against healthy ranges by age and sex.
Use CalculatorVeterinary Drug Dosage Calculator
Clinical dosage reference for common veterinary drugs. Calculates doses by patient weight with formulation-specific output.
Use CalculatorBuilt on Veterinary Science
Every calculator on this page is powered by peer-reviewed research and established veterinary guidelines. We cite our sources on every tool page so you can verify the data yourself. Our puppy weight predictions use WALTHAM growth curves from over 50,000 puppies. Our age calculators use AAHA/AAFP life stage guidelines. Our calorie calculator uses the NRC 2006 formula endorsed by WSAVA and AAHA.
These tools are designed to be helpful starting points — not replacements for professional veterinary care. For personalized health advice, always consult your veterinarian.