How cat years work
A one-year-old cat is roughly like a 15-year-old person, and a two-year-old cat is about 24. After that, each cat year adds about four human years. That means a 10-year-old cat is about 56 in human years.
Cat life stages
- Kitten: birth to 1 year
- Junior: 1 to 2 years
- Prime adult: 3 to 6 years
- Mature: 7 to 10 years
- Senior: 11 to 14 years
- Super senior: 15 years and up
These stages come from commonly used veterinary guidelines and help you plan checkups, diet and care.
Related guides
Questions people ask
How old is a 10-year-old cat in human years?
About 56 human years, using the common chart of 15 for the first year, 24 at two, and about 4 human years for each year after.
When is a cat considered senior?
Around 11 years old. Cats 15 and older are often called super seniors.
Do indoor cats live longer?
Indoor cats often live longer because they face fewer dangers like cars and fights. Many indoor cats live into their mid to late teens.