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Cat Age Calculator - Cat Years to Human Years

Free cat age calculator. Convert your cat's age to human years accurately. Understand your cat's life stage and health needs.

Convert cat years to human years

Enter your values to see results

and click the "Calculate" button

Cat Age Calculator

Calculate your cat's age in human years. Cats age rapidly in their first two years, then slow down.

Year 1 = 15 human years | Year 2 = 9 more (24 total) | After: 4 years per cat year

A 5-year-old cat is about 36 in human years. Indoor cats typically live longer than outdoor cats.

How long do cats live?

Indoor cats: 12-18 years average, some reach 20+. Outdoor cats: 2-5 years average due to risks. Mixed: 10-15 years.

When is my cat a senior?

Cats are senior at 11+ years (60+ human years). Senior cats need annual vet visits, dental care, and age-appropriate diet.

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