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Dog Years

Online human and dog ages calculator converts between human years and dog years. To see how old your dog is if it is a human, or how old you are if you were a dog.

Withdrawal are made at the beginning of each period.

  • Age in Human Years is:
  • Age in Dog Years is:
Input your age in the left box to calculate how old you are if you were a dog. Input your dog's age in the right box to calculate how old they are if they were human.
  • Human Age in Years:
  • Dog Age in Years:

1. Age of Dog:

Dogs mature faster than humans, reaching the equivalent of twenty-one years in only two, but then aging slows to an average of four human years every year after.

2. Lifespan of Dog:

The typical lifespan of dogs varies widely among breeds.

The breed with the shortest lifespan is the Dogue de Bordeaux, with a median longevity of about 5.2 years, but several breeds, including Miniature Bull Terriers, Bloodhounds, and Irish Wolfhounds are nearly as short-lived, with median longevities of 6 to 7 years.

The longest-lived breeds, including Toy Poodles, Japanese Spitz, Border Terriers, and Tibetan Spaniels, have median longevities of 14 to 15 years.

3. The Oldest:

The oldest dog in the world was an Australian cattle dog named Bluey. It lived for 29 years and 5 months.

The oldest person verified in the world was a French woman named Jeanne Calment. She lived for 122 years and 164 days.

More Information: List of Oldest People    List of Oldest Dogs