Dog Age Calculator
Convert dog age to human years.
How to Do It Manually
Dog ages are not linear. First year ≈ 15 human years, second year ≈ 9, then ≈ 5 per year after. Varies by breed and size.
Dog Age (human equivalent) ≈ 15 + 9 + (5 × years after 2)
- If dog < 1 year old: multiply by 15.
- If 1–2 years: add 15 + (9 × (age − 1)).
- If > 2 years: add 15 + 9 + (5 × (age − 2)).
Frequently Asked Questions
Is the '1 dog year = 7 human years' rule accurate?
No, it's oversimplified. Dogs age faster in the first two years, then more slowly.
Do breeds matter?
Yes, large breeds age faster and live shorter lives than small breeds.