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Dog to Human Years
FunAdjusted breed and size scalings for dog aging.
ttb run dog-age
Years
Months
Equivalent Human Age
29
years old
Dogs age rapidly in their first two years. After age 2, a medium dog ages roughly 5 human years for every 1 calendar year.
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Dog to Human Years の使い方
Enter your dog's age in human years and select their size category (small, medium, large, giant). The calculator converts to equivalent "dog years" using the veterinary-approved nonlinear formula that accounts for the rapid maturity in early years and the slower aging after that. Small dogs generally live longer than large breeds.
1
Enter your parameters
Configure the inputs for the Dog Age according to your specific needs.
2
View real-time results
The utility instantly processes your request and displays the calculated outputs directly in your browser.
3
Copy or Download
Click the copy icon next to the final output to instantly grab the result, or export it if applicable.
よくある質問
Is the "7 years" rule accurate?+
No. The 7:1 ratio is a myth. Dogs mature much faster in their first two years (a 1-year-old dog is roughly equivalent to a 15-year-old human), then aging slows to about 4-5 human years per dog year depending on breed size.
Why do small dogs live longer?+
Scientists aren't entirely sure, but larger dogs grow faster and age faster at a cellular level. A Great Dane's average lifespan is 7-10 years, while a Chihuahua can live 14-16 years. The exact mechanism likely involves growth hormones and cellular stress.