Cat-to-Human Age Converter
Convert a cat's age to its equivalent in human years.
Human-equivalent age
12 yrs
Cat age
4y 0m
Lifestyle
indoor
Indoor cats mature quickly the first 2 years (≈ 15 / 24 human-year milestones) then age roughly 4 human years per cat year. Outdoor cats age about 2× faster.
About this tool
Type the cat's age, pick an indoor or outdoor lifestyle, and get the modern calibrated human-equivalent age plus the common 'cat years' table. The r/cats 'how old is my cat in human years' thread answer.
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