Dog Age Calculator
Convert dog years to human years based on size
Calculator
How Old Is Your Dog in Human Years?
The old "multiply by 7" rule is a myth. Actual aging depends on your dog's size. Larger dogs age faster.
Frequently Asked Questions
Why isn't 1 dog year = 7 human years?
Dogs mature much faster in their first two years (a 1-year-old dog is roughly equivalent to a 15-year-old human). After that, aging slows down but varies by size — large breeds age faster than small breeds.
How long do dogs live on average?
Small breeds: 12–16 years. Medium breeds: 10–14 years. Large breeds: 8–12 years. Giant breeds: 6–10 years. Mixed breeds often live slightly longer than purebreds of similar size.
Dog Age Calculator
Convert your dog's age to human years using a size-adjusted formula. More accurate than the outdated 7:1 ratio.