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Forget "multiply by seven." This works out your pet's real human-age equivalent using the size-based and feline charts vets actually use, then estimates their biological age from body condition, dental health, disease and lifestyle. By Dr Duncan Houston.
This is a teaching estimate, not a medical measurement. It exists to show how much everyday factors move the needle, so the wins feel worth it. Your vet’s exam and bloods are the real picture.
Save this profile, log weight, dental checks and health changes over time, get reminders for the tests that matter at each life stage, and chat to a certified vet the moment something looks off.
Open ASK A VET™Human-year conversions are based on standard veterinary size and feline age charts and represent averages. Individual pets vary with genetics, breed, health, care and lifestyle. The biological-age estimate is an educational guide and is not a diagnosis, test result or prediction of lifespan. Always work with your veterinarian on your pet's actual health and book a check-up if anything changes. This calculator is not a substitute for veterinary advice. By Dr Duncan Houston.