Find out how old your pet is in human years! Works for dogs, cats, rabbits, hamsters, horses and more.
The old "1 dog year = 7 human years" rule is a myth. Dogs age much faster early in life and slower later. Small dogs also age slower than large breeds.
Small dogs live 14–16 years. Giant breeds often live only 8–10 years. A 5-year-old Great Dane is roughly equivalent to a 50-year-old human.
A 1-year-old cat equals about 15 human years. A 2-year-old cat is like a 24-year-old. After that, each cat year equals about 4 human years.
The 1 dog year = 7 human years rule is not accurate. Dogs mature much faster early in life. A 1-year-old dog is roughly 15 in human years. A 2-year-old is about 24. After age 2, each year equals about 4-5 human years depending on breed size. Use our calculator above for a more accurate estimate.
A 1-year-old cat is approximately 15 in human years. A 2-year-old equals about 24. After age 2, each cat year equals roughly 4 human years. A 10-year-old cat is about 56 in human years.
Dogs are generally considered seniors at 7-10 years depending on size. Small dogs become seniors around 10-12, medium dogs around 8-10, and large breeds as early as 5-7 years old.
The average indoor cat lives 12-18 years. Many cats live into their 20s. Outdoor cats live significantly shorter lives of 5-7 years on average due to dangers like traffic and disease.