🐈 Cat Calculator

Cat Age Calculator
in Human Years

A 1-year-old cat is about 15 in human years. A 2-year-old is roughly 24. After that, each cat year equals about 4 human years. Enter your cat's age for a precise result.

Your Cat's Age (years)

–

Human Years Old

🐱 Cat Life Stages (AAFP Guidelines)

🐣 Kitten

0–6 months

≈ 0–10 human yrs

😸 Junior

7 months–2 yrs

≈ 12–24 human yrs

💪 Prime

3–6 years

≈ 28–40 human yrs

🧑 Mature

7–10 years

≈ 44–56 human yrs

🧓 Senior

11–14 years

≈ 60–72 human yrs

👴 Geriatric

15+ years

≈ 76+ human yrs

📊 Cat Age Conversion Chart

Cat Age	Human Equivalent	Life Stage
1 year	~15 years	Junior
2 years	~24 years	Junior
3 years	~28 years	Prime
5 years	~36 years	Prime
7 years	~44 years	Mature
10 years	~56 years	Mature/Senior
12 years	~64 years	Senior
15 years	~76 years	Geriatric
20 years	~96 years	Geriatric

Frequently Asked Questions

How do you calculate cat years to human years?

The formula used by the American Association of Feline Practitioners (AAFP): Year 1 = 15 human years. Year 2 = +9 (total 24). Each year after that ≈ +4 human years. So a 10-year-old cat is roughly equivalent to a 56-year-old human.

What is the oldest recorded cat age?

Creme Puff, a cat from Austin, Texas, lived to be 38 years and 3 days old (1967–2005), earning a Guinness World Record. In human years, that would be approximately 168 years old. Most domestic cats live 12–18 years.

When is a cat considered a senior?

The AAFP considers cats "senior" at 11–14 years (about 60–72 human years) and "geriatric" at 15+. Senior cats benefit from twice-yearly vet visits, joint support, and easily digestible food.

Do indoor cats live longer than outdoor cats?

Yes, significantly. Indoor cats typically live 12–18 years, while outdoor or indoor/outdoor cats average just 5–7 years due to exposure to traffic, predators, disease, and injury. Indoor cats in their senior years are the most common.

Cat Age Calculatorin Human Years

Cat Age Calculator
in Human Years