Free Tool

Dog Age Calculator

Forget “multiply by seven” — that’s a myth. Find out how old your dog really is in human years, using the formula scientists derived from your dog’s actual DNA.

years months
42human years
Prime adult

Based on the University of California San Diego 2019 epigenetic study (Cell Systems): human age ≈ 16 × ln(dog age) + 31. The study used Labrador Retrievers, and dogs of different sizes age at different rates, so this is a science-based estimate — not a vet diagnosis.