Cat Age Calculator
How old is your cat in human years? Unlike the old myth of multiplying by 7, cats age rapidly in their first two years and then slow down. This calculator uses the formula recommended by the American Association of Feline Practitioners: the first year equals 15 human years, the second adds 9 more, and each year after that adds 4 human years.
The feline aging formula works like this:
- Year 1: 0-1 cat years = 0-15 human years
- Year 2: 1-2 cat years = 15-24 human years
- Year 3+: Each additional year = +4 human years
So a 5-year-old cat is about 36 in human years, and a 10-year-old cat is about 56.
Indoor cats typically live 12-18 years, with some reaching their mid-20s. Outdoor cats face more hazards and average 7-12 years. The oldest recorded cat, Creme Puff, lived to 38 years (about 168 in human years).