Dog & Cat Age Calculator
Convert your dog's or cat's age into human years, taking size into account for dogs.
Dog & Cat Age Calculator
The old rule of "one dog year equals seven human years" is a myth. Dogs and cats grow up very fast in their first two years and then age more slowly, and large dogs age faster than small ones. This calculator uses the age charts commonly used by vets for small, medium, large and giant dogs and for cats, and shows your pet's life stage.
How to use Dog & Cat Age Calculator
- Choose your pet: a cat, or a dog by adult weight.
- Enter its age in years and months.
- Read the equivalent human age and the life stage.
When it comes in handy
- Understanding when your pet counts as a senior and may need more check-ups.
- Satisfying curiosity (and settling family arguments).
Frequently asked questions
- Why does dog size matter?
- Large and giant breeds have shorter lifespans and reach old age sooner. A 10-year-old Great Dane is much older in human terms than a 10-year-old Chihuahua.
- How accurate is it?
- It is an estimate. Breed, genetics, weight and health all affect how a pet ages. Your vet is the best judge of your pet's health at any age.