Dogs & CatsBreed Size AdjustedLife StagesFree
🐕
In human years, your dog is approximately
36 years old
MatureHuman age by breed size
small
36
medium
36
large
36
giant
45
Dog aging varies significantly by breed size. Larger breeds age faster and have shorter lifespans. This calculator uses updated veterinary research data.
Frequently Asked Questions
Is the "7 years per dog year" rule accurate?
No! Dogs age faster in their first two years and the rate varies by breed size. Large breeds age faster than small breeds.
How does breed size affect dog aging?
Small dogs (<20 lbs) tend to live 12-16 years, while giant breeds (>100 lbs) may only live 7-10 years. Larger dogs age proportionally faster.
How do cats age?
Cats reach about 15 human years in their first year, 24 by year two, then age about 4 human years per cat year after that.
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