Dog Age Calculator
Estimate dog age in approximate human years
Birth date 🐕
🐕 How it works
A flat “×7” rule is inaccurate. Here the first two years count faster, and each later year equals about five human years.
Breed and size strongly affect real aging — treat the result as a guide.
📐 Formula
up to 2 years: age × 12; then: 24 + (age − 2) × 5
Age includes months, then rounds. Example: 5 years → 39 human years.
❓ FAQ
Why not ×7?
Puppies mature faster; after two years the pace is closer to ×5.
Does breed matter?
Not in this formula. Large breeds often age faster than small ones.
Can I use it for cats?
No — use the cat age calculator.