Dog Age Calculator
Dogs do not simply age seven human years for every dog year. Enter age and adult size group for a more useful approximation.
Why size matters
Dogs mature quickly in the first two years, then larger dogs generally age faster than smaller dogs. This calculator uses the physiological-age table published with AAHA materials, with interpolation between whole years.
This is an age comparison, not a health prediction.
Breed, genetics, health and individual lifespan still matter.
Breed, genetics, health and individual lifespan still matter.
Sources
AAHA — Physiological Age Chart
AAHA — Canine Life Stage Definitions