Question 1

How do I calculate my dog's age in human years?

Accepted Answer

Enter your dog's actual age in years and select its size (small under 9kg, medium 9-22kg, large over 22kg). The calculator uses the AVMA-aligned method: the first year equals about 15 human years, the second about 9, and each additional year is 4-5 human years depending on breed size.

Question 2

Is the 1 dog year = 7 human years rule accurate?

Accepted Answer

No. The 7:1 rule is a myth. Dogs mature much faster than humans in their first two years — a 1-year-old dog is roughly 15 in human years, and a 2-year-old is about 24. After that, each dog year equals about 4-5 human years, with smaller breeds generally living longer.

Question 3

Why does dog size matter for age calculation?

Accepted Answer

Small dogs (under 9kg / 20lbs) age more slowly and live longer — often 15+ years. Large and giant breeds age faster and have shorter lifespans. A 10-year-old small dog is about 56 human years, while a 10-year-old large dog is closer to 66.

Question 4

What is a dog year?

Accepted Answer

A dog year is one calendar year of a dog's life. Because dogs age faster than humans, especially in their first two years, converting dog years to human years requires a size-aware formula rather than simple multiplication.