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Dog Age in Human Years

Enter your dog's age and size to estimate their equivalent age in human years.

Dog's age (years) Dog size Small — up to 9 kg / 20 lb Medium — 10–22 kg / 21–50 lb Large — 23–40 kg / 51–90 lb Giant — over 40 kg / 90 lb

Size affects the estimate because larger dogs generally age faster during adulthood than smaller dogs.

CALCULATE DOG AGE

Dog ageing varies by breed, genetics, health and individual development. This calculator provides a general estimate rather than an exact biological conversion.

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