You can enter cat's age by years, months, weeks or days OR select the date of birth to compute human years. You can enter human years to find the equivalent cat years.
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Cat Years to Human Years Conversion

The conversion of cat years to human years
is a complex topic, with no one-size-fits-all answer. This is because cats age differently than humans, and their development is influenced by a number of factors, including breed, lifestyle, and overall health.- However, there are some general guidelines that can be used to estimate a cat's age in human years.
- There is a formula for cat years to human years that is similar to the one for dogs.
The formula for cat years to human years is as follows:
Human age = (Cat age - 2) x 4 + 24 use this for cat age > 2
The first year of a cat's life is equivalent to about 15 human years. The second year of a cat's life is equivalent to about 9 human years
- Each year after the 2nd year is roughly equal to about 4 human years.
- This means that a 3-year-old cat is about 28 years old in human years, a 5-year-old cat is about 36 years old in human years, and a 10-year-old cat is about 56 years old in human years.
- Cats age more quickly in their early years. This is because they are going through a period of rapid growth and development.
- Cats development slows down as they get older. This is similar to how humans develop.
- Indoor cats tend to live longer than outdoor cats. This is because they are less exposed to dangers such as predators, disease, and accidents.
- Some breeds of cats live longer than others. For example, Maine Coons and Ragdolls have an average lifespan of 13-16 years, while Burmese and Siamese cats have an average lifespan of 12-15 years.
Note: The above content has inputs from Bard, the AI model from Google
Cat's Age Chart - Cat Years to Human Years Conversion Table

Age in Cat Years | Age in Human Years |
---|---|
1 year in cat years | 15 years |
2 years in cat years | 24 years |
3 years in cat years | 28 years |
4 years in cat years | 32 years |
5 years in cat years | 36 years |
6 years in cat years | 40 years |
7 years in cat years | 44 years |
8 years in cat years | 48 years |
9 years in cat years | 52 years |
10 years in cat years | 56 years |
11 years in cat years | 60 years |
12 years in cat years | 64 years |
13 years in cat years | 68 years |
14 years in cat years | 72 years |
15 years in cat years | 76 years |
16 years in cat years | 80 years |
17 years in cat years | 84 years |
18 years in cat years | 88 years |
19 years in cat years | 92 years |
20 years in cat years | 96 years |
Frequently Asked Questions on Cat Years Calculator

15 human years equals the 1 year of a cat’s life. Year 2 for a cat equals to 24 human years. And after that, each human year it increases by 4 years every year for a cat.
15 human years equals the 1 year of a cat’s life. Year 2 for a cat equals to 24 human years. And after that, each human year it increases by 4 years every year for a cat.
15 human years equals the 1 year of a cat’s life. Year 2 for a cat equals to 24 human years. And after that, each human year it increases by 4 years every year for a cat.
15 human years equals the 1 year of a cat’s life. Year 2 for a cat equals to 24 human years. And after that, each human year it increases by 4 years every year for a cat.
15 years.
15 years.
24 years.
24 years.
28 years.
28 years.
36 years.
36 years.
32 years.
32 years.
44 years.
44 years.
56 years.
56 years.
76 years.
76 years.
40 years.
40 years.
48 years.
48 years.
15 human years equals the 1 year of a cat’s life. Year 2 for a cat equals to 24 human years. And after that, each human year it increases by 4 years every year for a cat.
15 human years equals the 1 year of a cat’s life. Year 2 for a cat equals to 24 human years. And after that, each human year it increases by 4 years every year for a cat.
0.07 years.
0.07 years.
52 years.
52 years.
44 years.
44 years.
76 years.
76 years.
64 years.
64 years.
60 years.
60 years.
72 years.
72 years.