Dog Years to Human Years
Convert your dog's age to human years
Dog Years to Human Years - Dog Age Calculator
Our dog years calculator converts your dog's age to human years and takes size into account. The "multiply by 7" rule is a simplification - dogs actually age faster early in life and then slow down. Small dogs tend to live longer than large dogs.
Why "multiply by 7" is a myth
The rule "1 dog year = 7 human years" is too simple. A 1-year-old dog is much more mature than a 7-year-old child. Modern formulas reflect that dogs age in a non-linear way - faster when young and slower in later years.
Dog life stages
- Puppy (0-1 year) - Rapid growth and development
- Junior (1-2 years) - Maturing, full of energy
- Adult (2-7 years) - Prime years
- Senior (7-10 years) - Slowing down, needs more care
- Geriatric (10+ years) - Special diet and care
Frequently asked questions
Do large dogs age faster?
Yes, large and giant breeds age faster than small ones. A Chihuahua may live 15-20 years, while a Great Dane often lives 7-10 years.
When is a dog "old"?
It depends on size: small dogs become seniors around 10, medium around 8, large around 6, giant around 5.