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Cat age in human years

Enter your cat’s age, in months too if you like. You’ll see their age in human years and their life stage.

years
months

In human years, your cat is about

44 human years

Life stage: mature

Based on the International Cat Care chart.

The short answer

A one-year-old cat equals about 15 human years, a two-year-old about 24. After that, each cat year adds 4 human years: at 10 a cat is about 56, at 15 about 76 (International Cat Care chart). From 11 years, a cat counts as a senior.

How we calculate: formulas and sources

Cat age in human years

AgeHuman yearsLife stage
3 months4kitten
6 months10kitten
1 year15junior
2 years24junior
3 years28adult
4 years32adult
5 years36adult
6 years40adult
7 years44mature
8 years48mature
9 years52mature
10 years56mature
11 years60senior
12 years64senior
13 years68senior
14 years72senior
15 years76super senior
16 years80super senior
17 years84super senior
18 years88super senior
20 years96super senior

International Cat Care (first year 15, second year 9, then 4 per year), rounded.

Questions

How do you convert cat years to human years?

First year 15, the second adds 9 (24), then 4 per year. Kittens have their own values: at 3 months a cat is about 4 in human years, at 6 months about 10.

Does “times 7” work for cats?

No. At one year a cat is almost grown up, so about 15. After that it ages more slowly: a 10-year-old cat is about 56, not 70.

When is a cat a senior?

According to International Cat Care, at 11 years. From 15, a cat counts as a super senior.

Does an older cat need less food?

There’s no fixed senior amount. Weigh your cat regularly and adjust the amount. If your cat loses weight for no clear reason, talk to your vet.

Sources (1)