Dog Age Calculator
Convert your dog’s age to human years using size-based ageing and the newer DNA-methylation formula.
Enter your values and press Calculate.
How to use the Dog Age calculator
The old “multiply by seven” rule is a myth — dogs mature very quickly in their first two years, and large breeds age faster later in life.
Formula
Traditional size-based method: the first year ≈ 15 human years, the second ≈ 9, then 4–7 years per year depending on size. Epigenetic clock (Wang et al., 2020): 16 × ln(dog age) + 31.