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Dog Age Calculator
Dog Age Calculator
Convert your dog's age to human years — using breed-size science!
Breed Size
Small
< 10 kg
Medium
10–25 kg
Large
25–45 kg
Giant
> 45 kg
Dog's Age
5 years
Puppy5 yrs10 yrs15 yrsSenior
About the Dog Age Calculator
Convert your dog's age to an approximate human age.
How to use the Dog Age Calculator
- Enter your dog's age and, if asked, its size.
- Press Calculate Human Age.
Tips
- The old "multiply by 7" rule is very rough. Dogs mature quickly in the first years, and larger breeds age faster.
- Your vet is the best guide to your dog's health at any age.
Frequently Asked Questions
No. It is only a rough average. The first year of a dog's life is closer to 15 human years.