Dog Age Calculator
Discover your dog's real age in human years with our scientifically-based calculator
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Your Dog's Human Age
years old in human years
How We Calculated This:
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Why Size Matters in Dog Aging
Small Dogs
Live 12-16 years on average. Age more slowly after the first 2 years.
Medium Dogs
Live 10-14 years on average. Balanced aging pattern throughout life.
Large Dogs
Live 8-12 years on average. Age faster, especially in later years.
Giant Dogs
Live 6-10 years on average. Age most rapidly due to their size.
The Science Behind Dog Aging
The old "1 dog year = 7 human years" rule is outdated. Modern veterinary science shows that dogs age much faster in their first two years, then the aging process varies significantly by size.
Our calculator uses the latest research from veterinary scientists to provide accurate age conversions based on your dog's size category and actual age.