Dog Age Calculator

Convert dog years to equivalent human years by dog breed.

Note, this calculator gives a rough estimate of equivalent human years. Your dog's health and living environment directly impact aging. Dog age calculator to convert your pet's calendar age to equivalent human year. The calculator assumes the dog ages 15 human years during the first year and 9 human years to the second years. After tow years the calculator uses the breed's average lifespan to linearly calculate the dog's age. If desired, use the options tab to adjust first and second year aging. In addition human life expectancy can we updated since it varies by time, history and country.