Dog Age Calculator
Calculate your dog's age in human years using the scientifically accurate method based on dog size.
Human Age Equivalent
0 years
Life Stage
Adult
Dog Life Stages
| Stage | Small | Medium | Large | Giant |
|---|---|---|---|---|
| Puppy | 0-1 yr | 0-1 yr | 0-1 yr | 0-1 yr |
| Young Adult | 1-2 yr | 1-2 yr | 1-2 yr | 1-2 yr |
| Adult | 2-8 yr | 2-7 yr | 2-6 yr | 2-5 yr |
| Senior | 8-12 yr | 7-10 yr | 6-8 yr | 5-7 yr |
| Geriatric | 12+ yr | 10+ yr | 8+ yr | 7+ yr |
Why Not Just Multiply by 7?
The old "multiply by 7" rule is a myth. Dogs age much faster in their first few years - a 1-year-old dog is roughly equivalent to a 15-year-old human. After that, aging depends on size. Smaller dogs tend to live longer and age more slowly than larger breeds.
Average Lifespan by Size
- Small dogs: 12-16 years
- Medium dogs: 10-14 years
- Large dogs: 8-12 years
- Giant dogs: 6-10 years
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