Health
Dog Age Calculator
Convert your dog's age to human years based on size and breed
FAQs
Is the '7 years' rule accurate?
No, the old rule of 'multiply by 7' is outdated. Modern research shows dogs age much faster in their first two years (15 years in year 1, 9 years in year 2), then slow down to 4-7 human years per dog year depending on breed size.
Why does dog size matter for age calculation?
Smaller dogs tend to live longer and age slower after maturity. Large and giant breeds age faster and typically have shorter lifespans. For example, a 10-year-old small dog is about 56 in human years, while a 10-year-old giant breed is about 66.
How old is a 1 year old dog in human years?
A 1-year-old dog is approximately 15 years old in human years, regardless of breed size. Dogs reach sexual maturity and near-adult size by their first birthday, similar to a teenager.
What are the dog life stages?
Dogs go through six life stages: Puppy (0-1 year), Young Adult (1-2 years), Adult (2-7 years for large breeds, 2-10 for small), Mature Adult, Senior, and Geriatric. Each stage has different care requirements.