PuppyGrowthHow cat years work
Year 1 = 15 human years · Year 2 = +9 (24 total) · Each year after = +4
| Cat age | Human years |
|---|---|
| 1 | 15 |
| 2 | 24 |
| 5 | 36 |
| 10 | 56 |
| 15 | 76 |
| 20 | 96 |
Cat life stages are commonly grouped as kitten (to 1 year), young adult (1–6), mature adult (7–10) and senior (11+).
Frequently asked questions
How old is a 10 year old cat in human years?
About 56 human years.
When is a cat a senior?
Usually from around 11 years of age.
Do indoor cats age differently?
Indoor cats often live longer, but the human-age comparison is the same.
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PuppyGrowthCalc gives general estimates for healthy pets. Every animal is different. Ask your vet about your pet's ideal weight, diet and health.