Lifestyle & Utility
Pet Age Calculator
Convert your pet's age to human-equivalent years based on species and breed size.
How this calculator works
Uses breed-specific ageing curves rather than a simple multiplier. For dogs, the first year equals 15 human years, the second year adds 9, and subsequent years add 4-7 depending on breed size. Cats follow a similar non-linear curve. The result is an approximate human-equivalent age.
Larger dogs age faster than smaller dogs
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FAQ
Frequently asked questions
Is 1 dog year really 7 human years?
No, the 1:7 ratio is a myth. Dogs age much faster in their first two years (a 2-year-old dog is roughly equivalent to a 24-year-old human). After that, each year equals about 4-5 human years, varying by breed size — small dogs age slower than large dogs.
How long do dogs live in Australia?
Average lifespan varies by breed: small breeds (Chihuahua, Maltese) 12-16 years, medium breeds (Border Collie, Staffy) 10-14 years, large breeds (Labrador, Golden Retriever) 10-12 years, giant breeds (Great Dane, Mastiff) 7-10 years.
How old is my cat in human years?
Cats reach the equivalent of about 24 human years by age 2. After that, each cat year equals roughly 4 human years. So a 10-year-old cat is about 56 in human years. Indoor cats typically live 15-20 years; outdoor cats 10-15 years.
When is a dog considered a senior?
Small breeds: 10-12 years. Medium breeds: 8-10 years. Large breeds: 6-8 years. Giant breeds: 5-6 years. Senior pets benefit from more frequent vet check-ups (every 6 months) and age-appropriate nutrition.
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