zztool About Cat Age Calculation
Cats age differently than humans. A cat's first year equals about 15 human years, the second year equals 24 human years, and each year after adds about 4 human years. Indoor cats live much longer than outdoor cats due to safety and regular care. This calculator uses data from the International Society of Feline Medicine (ISFM).
How It's Calculated
FAQ
When is a cat considered senior?
According to ISFM standards, cats 11+ years are senior (equivalent to 60 human years). Cats 15+ are considered super senior.
Why do indoor cats live longer?
Indoor cats avoid risks like traffic, disease, fights, and poisoning. With regular food and medical care, they can live 12-18 years or longer.
How to care for a senior cat?
Senior cats need regular checkups, easily digestible food, comfortable rest areas, moderate activity, and monitoring of behavior and appetite changes.
What is the longest cat lifespan?
The Guinness World Record holder lived 38 years. Well-cared indoor cats can commonly live past 20 years.
Great for cat lovers!
Accurate cat age converter.
My cat is older than I thought!