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How old is your pet in human years?
Pick dog or cat, set the age, and get a quick estimate. No sign-up, nothing to install.
5 years old
That’s about39 yearsin human years
An estimate based on common vet guidelines. For dogs, size and breed matter: large breeds tend to age faster.
How we calculate it
The first year of a dog’s or cat’s life counts as about 15 human years, and the second brings them to about 24. After that, each year adds about 5 human years for a dog and about 4 for a cat.
It’s a rule of thumb, not a diagnosis. Small dogs often live longer and age more slowly than large breeds, so ask your vet what “senior” means for yours.
Quick reference chart
| Pet age | Dog | Cat |
|---|---|---|
| 1 year | 15 years | 15 years |
| 2 years | 24 years | 24 years |
| 3 years | 29 years | 28 years |
| 4 years | 34 years | 32 years |
| 5 years | 39 years | 36 years |
| 6 years | 44 years | 40 years |
| 7 years | 49 years | 44 years |
| 8 years | 54 years | 48 years |
| 9 years | 59 years | 52 years |
| 10 years | 64 years | 56 years |
| 12 years | 74 years | 64 years |
| 14 years | 84 years | 72 years |
| 16 years | 94 years | 80 years |
| 18 years | 104 years | 88 years |
| 20 years | 114 years | 96 years |
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