Kitten YearsCat age calculator and life-stage guide

Cat years made simple

Kitten Age by Month

Kittens change quickly during the first year. Use these month-by-month guides to understand growth, behavior, and approximate human-age comparisons.

Choose your kitten's age

The first year is the fastest part of a cat's life. A kitten's body, confidence, play style, and daily routine can change a lot from one month to the next.

1 month oldAbout 1.3 human years 2 months oldAbout 2.5 human years 3 months oldAbout 3.8 human years 4 months oldAbout 5 human years 5 months oldAbout 6.3 human years 6 months oldAbout 7.5 human years 7 months oldAbout 8.8 human years 8 months oldAbout 10 human years 9 months oldAbout 11.3 human years 10 months oldAbout 12.5 human years 11 months oldAbout 13.8 human years 12 months oldAbout 15 human years

Why kitten months deserve their own pages

A kitten's first year is not just a smaller version of adult cat life. Very young kittens need warmth, close monitoring, safe handling, and veterinary guidance. Older kittens need play, structure, scratching options, and routines that help them become confident cats.

Use the month pages as a friendly starting point. For vaccines, feeding, parasites, weight concerns, and any health questions, your veterinarian should guide the details.

Helpful next pages

Kitten Care by AgeA broader care guide for the first year.Cat Years ChartCompare kitten months with cat years.1 Year Old CatSee what happens at the first birthday.