Dog Age Calculator
Find out how old your dog is in human years using the AKC’s size-adjusted formula. Discover your dog’s life stage and what it means for their health.
Enter your dog’s age and breed size for a precise human-age conversion. Takes under 15 seconds.
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Veterinary Disclaimer
This calculator is intended for informational purposes only and does not constitute veterinary advice. Dog age conversions are estimates based on the AKC/AAHA 2019 size-adjusted age table. Individual dogs age at different rates depending on genetics, diet, environment, and overall health. Life stage recommendations are general guidelines only. Always consult a licensed veterinarian for personalized health assessments, particularly for senior and geriatric dogs who benefit from bi-annual wellness exams.
| Dog Age | Small | Large |
|---|---|---|
| 1 yr | 15 | 15 |
| 3 yrs | 28 | 28 |
| 5 yrs | 36 | 36 |
| 7 yrs | 44 | 50 |
| 10 yrs | 56 | 66 |
| 12 yrs | 64 | 77 |
| 15 yrs | 76 | 93 |
Giant breeds (Great Danes, Mastiffs) are considered senior at just 5–6 years.
Small dogs often live 15–18 years — equivalent to 80–96 human years!
The “7 years per dog year” rule is a myth — it ignores breed size and the puppy growth phase.
Senior dogs need vet checkups every 6 months instead of annually.
Track your dog’s health over time, get life-stage reminders, and receive personalized senior care alerts.
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