The old rule of "multiply by 7" for dog years is a myth. Veterinary science has shown that dogs age much faster in their first two years of life, then the aging rate slows considerably. A one-year-old dog is roughly equivalent to a 15-year-old human, not a 7-year-old. This calculator uses breed-specific veterinary aging curves for accurate results.
Calculate accurate human-equivalent ages for dogs, cats, hamsters, rabbits, parrots, horses, goldfish, and turtles. Each species has its own aging curve based on veterinary research. Discover the crossover date when your pet's human-equivalent age surpasses your own actual age, and see where your pet falls in its expected lifespan.
This free tool supports eight different pet types with scientifically-based aging curves. Enter your pet's name, species, and date of birth alongside your own birthdate to see a complete comparison. All calculations run in your browser with no data transmitted.