Dog Age Calculator

How old is your dog in human years? Enter their age and size for an accurate result based on the latest veterinary research.

years

Dog years to human years chart

Dog ageSmallMediumLargeGiant
1 year15151515
2 years24242424
3 years28293031
5 years36394245
7 years44495459
10 years56647280
13 years687990101
15 years7689102115

How does it work?

The old "multiply by 7" rule is a myth. Dogs mature much faster in their first two years — a 1-year-old dog is closer to a 15-year-old human, not a 7-year-old.

After age 2, the rate depends on size. Smaller dogs tend to live longer and age more slowly, while giant breeds age faster. This calculator uses size-adjusted rates based on guidelines from the American Veterinary Medical Association.

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