When is a Ragdoll fully grown?

Most Ragdolls reach their full size and coat at three to four years old, much later than the average cat, which is grown by about one. They do most of their growing in the first year, then keep filling out, getting heavier through the chest and growing a fuller ruff until about four.

How big is a Ragdoll compared to a normal cat?

An average domestic cat weighs about 4 to 5 kg. An adult male Ragdoll usually weighs 6 to 9 kg and a female 4.5 to 6.5 kg, and a big male can measure close to a metre from nose to tail tip. Much of that size is long bones and coat rather than fat.

Is my Ragdoll kitten too small?

Probably not. Ragdoll kittens vary a lot, and girls are usually lighter than boys from the start. What matters is steady gain week to week. If your kitten stops gaining, loses weight or seems lethargic, see your vet. If it is growing steadily but sits below a chart, it is most likely just a smaller cat.

Do male Ragdolls get bigger than females?

Yes, noticeably. By adulthood a male is often 2 kg or more heavier than his sister, with a broader head and chest. The gap is small at go-home age and opens up through the second and third years, when males keep filling out after females have mostly stopped.

Ragdoll growth

Ragdoll Kitten to Cat: Ragdoll Cat Size and Growth by Age

By Shannon, Regal Ragdoll Kittens, Bowral NSW. Updated 13 October 2026.

A Ragdoll grows from about 1 to 1.6 kg at twelve weeks to 4.5 to 6.5 kg for a female and 6 to 9 kg for a male, but it takes three to four years to get there. Most of the growth happens in the first year. After that a Ragdoll slowly fills out, gets heavier through the chest and grows its full ruff. Here is what to expect at each stage.

Ragdoll weight by age

These are typical ranges for healthy pet Ragdolls. Use them as a guide, not a target: a cat that grows steadily and feels right under your hands is doing fine even if it sits outside the range.

Age	Male Ragdoll	Female Ragdoll
8 weeks	0.9 to 1.2 kg	0.8 to 1.1 kg
12 weeks (go-home)	1.2 to 1.6 kg	1.0 to 1.4 kg
6 months	2.7 to 3.6 kg	2.3 to 3.2 kg
12 months	4.5 to 5.5 kg	3.5 to 4.5 kg
2 years	5.5 to 7.5 kg	4 to 5.5 kg
3 to 4 years (fully grown)	6 to 9 kg	4.5 to 6.5 kg

Weigh your kitten on kitchen scales in a box until it gets too big, then weigh yourself holding the cat and subtract your own weight. Once a month is enough after the first few months.

Ragdoll kitten to cat: the stages

12 weeks to 6 months: fast growth

This is when your kitten will seem to grow overnight. Legs get long, the body stretches out and the head can look slightly too small for a while. A Ragdoll kitten in this stage needs three or four measured meals a day of a complete kitten food. Our Ragdoll kitten feeding guide has a schedule.

6 to 12 months: the lanky teenager

Growth slows but does not stop. Many Ragdolls look leggy and a bit thin-coated at this age, especially in summer. It is normal. Switch to adult food at around twelve months, and keep measuring, because desexed adolescents put weight on easily.

1 to 2 years: height done, filling out

Your Ragdoll is close to its adult length by now but will keep getting heavier and broader. Males in particular thicken through the neck and chest. The coat grows longer and silkier, and the ruff around the neck starts to appear.

3 to 4 years: fully grown

Full size, full coat and full colour. This is the Ragdoll you see in breed photos. A large male at this age can measure close to a metre from nose to tail tip.

How big do Ragdoll cats get compared to other breeds?

Ragdolls are one of the largest domestic breeds. An average moggy weighs about 4 to 5 kg, so a grown male Ragdoll can be nearly twice the size. Maine Coons are similar in weight and often longer, while a British Shorthair is stockier but shorter. The Ragdoll's size is mostly long bone and coat, which is why they feel heavier than they look when they go floppy in your arms.

Plan for that size now. Buy a large carrier rather than a kitten one, a scratching post at least 80 cm tall that will not tip over, and the biggest litter tray you can fit. For adult males a storage tub with a doorway cut in the side works better than most commercial trays.

What else changes from Ragdoll kitten to cat

Colour

Every Ragdoll is born white. The points show within the first couple of weeks and keep darkening until two or three years old, and the body often picks up some shading. A pale kitten at go-home is completely normal. Our Ragdoll colours guide shows how each colour develops.

Coat

Kittens have a soft, fluffy coat that can look short. The adult coat is longer, silkier and has a light undercoat, with a ruff around the neck and "britches" on the back legs. It usually arrives between one and three years.

Eyes

Ragdoll kittens' eyes are blue from the moment they open, and stay blue. The shade often deepens in the first months.

Personality

The busy, climbing kitten settles into a calm, floppy adult somewhere between one and two. If your kitten is a whirlwind at six months, that is a phase, not a temperament.

Raising a big, healthy Ragdoll

The goal is steady growth, not maximum size. Overfeeding a kitten to make a bigger cat just makes an overweight one, and extra weight is one of the main things that shortens a Ragdoll's life. Our article on how long Ragdoll cats live covers why.

Size also has a lot to do with the parents. Atticus, our king, is a long, heavy-boned seal bicolour, and his kittens tend to be big. You can meet him and our queens on our queens and king page, and see the kittens growing up in our house right now on our Ragdoll kittens for sale page.