About PawYears

PawYears is an independent publication for dog owners who want clear, science-based information about their dog's age, health and life stages. We make a free dog age calculator and write in-depth guides on canine lifespan and care.

Editorial standards

Every article on PawYears is researched against peer-reviewed veterinary literature, large-scale studies such as the Dog Aging Project, and guidance from established bodies including the American Kennel Club, the American Veterinary Medical Association and the Royal Veterinary College. We link to our sources directly so you can verify our claims.

How the calculator works

Our calculator computes three results in parallel: the 2019 epigenetic formula (16 × ln(age) + 31), an AKC-style breed-size adjustment, and the legacy 7× rule. The calculator runs entirely in your browser — we do not store or transmit any data you enter.

Not a substitute for veterinary care

PawYears provides educational information only. It is not medical advice. For any health concern about your dog, please consult a licensed veterinarian.

Contact

For corrections, partnerships or press, reach our editorial team at editorial@pawyears.app.