This calculator provides an estimate based on general breed-size patterns. Your dog's actual aging depends on breed, genetics, diet, exercise, and overall health. Consult your veterinarian for personalized care guidance.
Enter in years (e.g., 0.5 for 6 months)
Size affects aging rate and expected lifespan
Human Years Equivalent
Lifespan Progress
PuppyAdultSeniorGeriatric
Life Stage
Expected Lifespan
Source: AVMA 2020 methodology and AAHA Canine Life Stage Guidelines. Aging varies widely by breed and individual health; talk to your veterinarian about your dog's specific needs.