Dog Age Calculator
Find out how old your dog is in human years.
Your Dog
years
How It Works
The common "multiply by 7" rule is a rough approximation. In reality, dogs age much faster in their first two years — a 1-year-old dog is roughly equivalent to a 15-year-old human, and a 2-year-old to a 24-year-old. After that, the rate varies by size: larger dogs age faster and have shorter lifespans than smaller breeds.
This calculator uses a simplified version of the AVMA guidelines: Year 1 = 15 human years, Year 2 = +9 (24 total), then +4–7 per year depending on size (Small: +4, Medium: +5, Large: +6, Giant: +7).