Dog Age Calculator
Dog Years Calculator
Discover the science behind dog aging! Our calculator uses the latest research to give you accurate age conversions between dog and human years, taking into account breed size and development stages.
Age Calculator
Choose your calculation type and enter the age below
Enter your dog's age in years (can include decimals for months)
Age Conversion Results
Your calculated age conversion and life stage information
How Dog Years Work
The Science Behind It
Our calculator uses the latest research from UC San Diego, which analyzed DNA methylation patterns to create a more accurate aging formula: Human Age = 16 × ln(Dog Age) + 31
Why Breed Size Matters
Smaller breeds tend to live longer and age more slowly, while larger breeds age faster. This is why we adjust calculations based on your dog's size category.
1 Year
Dog's first year = ~31 human years
2 Years
Dog's second year = ~42 human years
5 Years
Dog's fifth year = ~56 human years