For the first year of a dog’s life count each year as 15 human years.
The First Year
For the second year and onward, count each dog year as 4 to 5 human years.
Following Years
Small dogs age faster - for small breeds calculate 7 human years per year.
Small Dogs
Giant breeds age slower at 5 human years per year after maturity.
Large Dogs
Use our easy dog-to-human age calculator tool for an exact conversion!
Use Our Calculator
While a useful guide, remember dog aging varies based on health, breed and care.
It's a Guideline
Look for signs of aging like energy level, greying fur and stiffness over simple formulas.
Monitor Your Dog