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Siamese age in human years

The Siamese typically weighs 6–14 lb and lives 15–20 years. Like all cats, a Siamese is about 15 in human years at age one and 24 at two, then ages about four human years per year, so a 5-year-old Siamese is about 36.

How old is your pet?

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The default is the size-based vet chart. See how pet age is calculated.

Siamese facts

Weight
6–14 lb
Life expectancy
15–20 years
Senior from
About 10 years old

Siamese age in human years

Siamese age chart
Cat ageHuman yearsLife stage
1 year15Young adult
2 years24Young adult
3 years28Young adult
4 years32Young adult
5 years36Young adult
6 years40Young adult
7 years44Mature adult
8 years48Mature adult
9 years52Mature adult
10 years56Senior
11 years60Senior
12 years64Senior
13 years68Senior
14 years72Senior
15 years76Senior
16 years80Senior
17 years84Senior
18 years88Senior
19 years92Senior
20 years96Senior
21 years100Senior
22 years104Senior

The default is the size-based vet chart. See how pet age is calculated.

Siamese age by year

Other cat breeds

FAQ

How old is a Siamese in human years?

The Siamese typically weighs 6–14 lb and lives 15–20 years. Like all cats, a Siamese is about 15 in human years at age one and 24 at two, then ages about four human years per year, so a 5-year-old Siamese is about 36.

How old is a 3-year-old Siamese in human years?

About 28, using the vet chart for cats. A 10-year-old Siamese is about 56.

What is the life expectancy of a Siamese?

Most live 15–20 years.

When is a Siamese considered a senior?

From about 10 years old, like all cats. That is about 56 in human years, and most Siamese cats live 15–20 years.