Part of the topic: 👶 Family & children
Cat age calculator
Enter your cat's age in years and months. The calculator converts it into human years and shows the life stage.
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🔒 Runs entirely in your browser – nothing you enter is uploaded or stored.
How to use it
- Enter years and months.
- Read the age in human years.
- Check the life stage – from 7 years regular vet check-ups become more important.
Last checked: October 2026 · Based on: AAHA/AAFP Feline Life Stage Guidelines (2021). Found a mistake? Use the form below – we fix confirmed errors and update the date.
Frequently asked questions
Is one cat year seven human years?
No. Cats mature very fast: a one-year-old cat is roughly 15 in human years, a two-year-old about 24; after that about 4 years per year.
When is a cat a senior?
From around 10 years according to the feline life-stage guidelines.
How old do cats get?
Indoor cats often reach 12–18 years.