About what age do kittens stop growing?

Most of the growth occurs in the first year, however they are considered “kittens” until they are about 2. I’d say in my experience with cats, once they reach about 6 to 9 months, mostly if anything they’ll get a bit fatter.

Dale’s right, but with some cat breeds, or permutations of those breeds, you’ll see a
very gradual lengthening and filling-out until they’re about 5 years old. Maine Coon,
Norwegian Forest Cat, Siberian, maybe others.

Regular cats are full grown at 1 year. Larger breeds continue to grow for a few more. British Shorthairs (Cheshire cats) are among those that susanc listed.

Whether or not you alter the cat also makes a difference. A male tom might grow until 2 years old. Kitty will grow fast. Enjoy the kittenhood while you can.

@tiny: “male tom”. : )

i have 2 maine coone mixes and they just turned a year old….they seemed to have tappered off in growth at about this time, as well…