How old is your dog
in human years?

Details: A 12-year-old dog may look much older than a 12-year-old person, who is only entering the early teenage years. Use this tool to see approximately how old your dog is in human years.

The old rule that one dog year always equals seven human years is only a rough shortcut. Dogs mature much faster in their first two years. This calculator estimates the first year at about 15 human years, the second year at about 24, and then adds roughly five human years for each additional dog year.