Free dog age calculator

How old is your dog, really?

Not the multiply-by-seven myth. A breed-accurate answer in one tap.

BASED ON AKC BREED DATA

Why breed matters

A Chihuahua and a Great Dane don't age the same

Body size drives how fast a dog ages. That's why tailculator asks for the breed.

Chihuahua, age 6
40
human years
vs
Great Dane, age 6
59
human years

Popular breeds

Find your dog

Labrador Retriever
11–13 yrs · large
French Bulldog
10–14 yrs · small
German Shepherd
9–13 yrs · large
Golden Retriever
10–12 yrs · large
Chihuahua
14–16 yrs · small
Dachshund
12–16 yrs · small
See all 20 dog breeds

How it works

Three taps to a real answer

  1. 1
    Pick your dog's breed. Or choose "mixed" and we'll use weight.
  2. 2
    Enter their age. In years — puppies and seniors both welcome.
  3. 3
    Get a real answer. Breed-accurate, cited, and ready to share.