Dog Age Calculator
Calculate your dog's real age in human years using veterinary science — not the outdated "multiply by 7" myth.
Adult
Your dog is in the prime of their life.
Get even more in the Pet Capsule app
Track age milestones, get life-stage-specific health reminders, and receive AI care recommendations tailored to your dog's exact age and breed.
Dog Age Chart by Size
Dogs age differently based on their size. Larger breeds age faster and have shorter lifespans.
| Dog Age | Small <20 lbs | Medium 20-50 lbs | Large 50-100 lbs | Giant >100 lbs |
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How This Calculator Works
Not the 7-Year Myth
The old "1 dog year = 7 human years" formula is inaccurate. Dogs mature rapidly in their first 2 years, then aging slows.
Size Matters
Small dogs live longer and age more slowly after maturity. Giant breeds age fastest, with significantly shorter lifespans.
Veterinary Science
This calculator uses the American Veterinary Medical Association guidelines with breed-size-specific aging rates.
Track your pet's health milestones
Pet Capsule automatically tracks age-appropriate health checks, vaccination schedules, and care reminders based on your pet's breed and age.
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