Dog Age Calculator
How old is your dog really? Forget the "multiply by 7" rule. Use our calculator to see your dog's age in human years based on their specific breed size.
Dog Details
Small
< 20 lbs
Medium
21 - 50 lbs
Large
51 - 90 lbs
Giant
> 90 lbs
The Science of Dog Aging
For a long time, people believed that one dog year equated to seven human years. However, modern veterinary science tells us that dogs age much more rapidly in their early years and then slow down as they mature.
Furthermore, pure physics plays a role. Size matters. Smaller dogs tend to live significantly longer than larger dogs. A Great Dane might be considered "elderly" at age 7, while a Chihuahua at age 7 is still in their prime.
Typical Life Stages by Size
| Stage | Small Dog | Medium Dog | Large Dog | Giant Dog |
|---|---|---|---|---|
| Puppy | 0-1 year | 0-1 year | 0-1 year | 0-1 year |
| Adult | 2-10 years | 2-9 years | 2-8 years | 2-5 years |
| Senior | 11+ years | 10+ years | 9+ years | 6+ years |
Frequently Asked Questions
Frequently Asked Questions
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