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Cat Age Calculator

Convert cat years to human years and vice versa

Enter Cat Age

How It Works

Conversion Logic

1

First year: 1 cat year = 15 human years

2

Second year: 1 additional cat year = 9 human years (24 total)

3

Each additional year: 1 cat year = ~4 human years

4

Monthly precision: Ages are interpolated linearly within each year for month-level accuracy

Note: The reverse calculation (Human → Cat) uses the same conversion curve to determine the equivalent cat age.

Age Conversion Chart

Cat AgeHuman AgeLife Stage
1 year15 yearsKitten
2 years24 yearsYoung Adult
3 years28 yearsAdult Cat
4 years32 yearsAdult Cat
5 years36 yearsAdult Cat
6 years40 yearsMature Cat
7 years44 yearsMature Cat
8 years48 yearsSenior Cat
9 years52 yearsSenior Cat
10 years56 yearsSenior Cat
11 years60 yearsSenior Cat
12 years64 yearsSenior Cat
15 years76 yearsGeriatric Cat
18 years88 yearsGeriatric Cat
20 years96 yearsGeriatric Cat

Frequently Asked Questions