Cat Weight Chart by Age & Breed

How to use this cat weight chart

1. Pick the mode. Switch to Kitten · by age for a growing cat under a year, or Adult · by breed for a full-grown one. Kittens change weight week to week, so age is what matters; adults settle into a breed range.
2. Choose the age or breed. In kitten mode, pick the closest age from newborn to 12 months. In adult mode, pick the breed — leave it on Domestic Shorthair for a regular mixed-breed house cat, and add sex if you know it to tighten the range.
3. Read the healthy range. The band shows straight away, in pounds and kilograms — that's the reference number even if you don't have a scale handy.
4. Enter your cat's weight (optional). Type it in or use the steppers, switch between lb and kg, and you'll get an instant read: on track, small, or ahead for a kitten; ideal, over, or under for an adult. No "calculate" button.
5. Print or share it. Download the full chart as a PDF for the fridge or a vet visit, copy your result, or share a link that reopens the same setup.

Why this cat weight chart is different

Most "cat weight chart" pages give you a static image and one number — 10 pounds — and leave the rest to you. This one does the work.

• Age and breed in one place. The kitten growth curve (birth to 12 months) and the 29-breed adult chart live on the same page, both in pounds and kilograms. Most sites split these across a dozen posts.
• It's interactive, not a picture. Pick an age or a breed and the healthy band updates; enter a weight and you get a verdict, not just data. Tap any row in the chart to load it.
• It's genuinely printable. Download a clean, branded PDF of the full chart — the reference vets and fosters actually want on paper — plus a one-line card for your own cat.
• It's honest about kittens. A growing kitten should track a curve, not hit a single number, so it never labels a kitten "obese" — just on track, a little small, or ahead.
• It shows its work. Every band is cited, and an automated fixture test runs on each build so the numbers can't quietly drift. Reviewed by a board-certified feline veterinarian.

How cat weight changes with age and breed

There's no one "correct" cat weight — there's a healthy range, and what sets it changes as your cat grows up.

Kittens: weight follows age

A newborn kitten weighs about 3–5 ounces and should roughly double that in the first week. After that a healthy kitten gains close to one pound per month for the first five or six months — so a rough shortcut is that a young kitten's weight in pounds tracks its age in months (a 3-month kitten around 3 pounds, a 4-month kitten around 4–5). Growth slows in the second half of the first year, and most standard-breed cats reach their adult weight of about 8–12 pounds by twelve months. What matters most isn't any single reading — it's that the trend keeps climbing steadily, which is why you plan feeding and weigh weekly.

Adults: weight follows breed and frame

Once a cat is full-grown, breed and bone structure set the range. A healthy Singapura can weigh 4–8 pounds while a healthy Maine Coon reaches 20 pounds or more — judged against a generic 10-pound "average," the Maine Coon would be wrongly flagged obese. For an adult cat, we classify weight against the published breed band: inside it is ideal, above it is overweight (and roughly 15%+ over the top is obese, matching the veterinary ~20%-over-ideal threshold), and below it is underweight. Our average & ideal cat weight checker uses the exact same model if you want a verdict-first tool for an adult cat.

Either way, the scale is only half the picture. Vets pair weight with a body condition score — a hands-on check of whether you can feel the ribs and see a waist — because a big-boned cat can top the chart and still be lean, while a small cat with a belly pouch can be overweight at a "normal" number.

Three quick examples

The 3-month kitten at 2 pounds

At three months, a standard-breed kitten typically weighs 2.5–4 pounds, so 2 pounds sits just under the band — often just the runt of a litter catching up. The move is simple: keep calorie-dense kitten food available at all times and re-weigh in a few days. A kitten that's dropping weight, not just lagging, is a vet visit.

The 14-pound adult tabby

A domestic shorthair at 14 pounds is above the 8–12 pound band — about 40% over the 10-pound midpoint, which lands in obese territory. That's roughly two pounds to lose just to reach the top of a healthy range, and on a cat that's the equivalent of 25–30 pounds on a person. The fix is slow and vet-guided — never a crash diet.

The 15-pound Maine Coon

A Maine Coon at 15 pounds looks enormous next to an average cat, but for the breed it's right in the healthy 10–22 pound band. Breed context is everything — which is exactly why the adult chart asks for breed before it judges.

Frequently asked questions

What is a healthy weight for a cat?

For a typical adult domestic cat, a healthy weight is about 8 to 12 pounds (3.6–5.4 kg), with most landing near 10. But it varies widely: small breeds like the Singapura are healthy at 4–8 pounds, while large breeds like the Maine Coon can be healthy up to about 22. Kittens are lighter and change fast — see the by-age chart above.

How much should my kitten weigh by age?

A rough guide for a standard-breed kitten: about 1 pound at 4 weeks, 2 pounds at 8 weeks, 3–4 pounds at 3 months, 4–5 pounds at 4 months, 6–7 pounds at 6 months, and near their adult 8–12 pounds by a year. The rule of thumb — roughly a pound per month for the first five or six months — is a handy check. Large breeds run heavier and keep growing well past their first birthday.

Is my cat overweight?

An adult cat is likely overweight above the healthy range for its breed, and obese at roughly 20% or more over ideal. The surest test is hands-on: you should be able to feel the ribs without pressing hard and see a waist from above. Enter your cat's weight in adult mode above for a breed-specific read, or use our dedicated cat weight checker.

What should my cat weigh in kg?

For a typical domestic cat, a healthy weight is roughly 3.6–5.4 kg. Toggle the chart to kg and every age and breed range shows in kilograms — for example a Siamese at about 2.7–5.0 kg, or a 6-month kitten at about 2.7–3.6 kg.

Can I embed this cat weight chart on my website?

Yes — copy the embed snippet at the bottom of this page. The embedded version is a clean, ad-free widget made for rescues, foster networks, veterinary educators, and cat blogs. Required attribution is built in; there's no fee, signup, or tracking.

Related tools

• Average & Ideal Cat Weight Checker — a verdict-first tool for adult cats by breed →
• Cat Diet & Weight-Management Calculator — turn a weight goal into a daily calorie target and exact portions →
• Cat Age Calculator — convert your cat's age to human years with life-stage care tips →
• Browse all free cat-care tools by Dr. Anand →

Gear that matches your cat's stage

Enter a weight and the chart suggests a few things that fit the result — a growth-formula kitten food and a gram-accurate scale for a growing kitten, a weight-management food and cat tree for an adult carrying extra, or calorie-dense wet food for one that needs to gain. For the full shortlist in each category, see Dr. Anand's guides to the best kitten food, the best cat food, the best dry cat food, and the best wet cat food. Not sure how much to serve? How much to feed a cat covers the day-to-day amounts.

Methodology & sources

Kitten growth (birth–12 months) is a standard/medium-breed curve — each age carries a typical healthy band, widened slightly around the common veterinary anchors (8 weeks ≈ 1.5–2 lb, 3 months ≈ 3–4 lb, 4 months ≈ 4–5 lb, 6 months ≈ 6–7 lb, 10–12 months ≈ 8–10 lb) so a normal kitten is never false-flagged. A weight is judged on track inside the band, small below it (a vet check if well below), and ahead above it — kittens are never labeled obese. Large and giant breeds run heavier and mature more slowly (up to 3–5 years), noted rather than silently scaled. Adult bands (12 months+) are illustrative breed ranges cross-referenced from APOP, PetMD, and Pawlicy Advisor, classified inside = ideal, above = overweight (15%+ over the ceiling = obese, matching the WSAVA/APOP ~20%-over-ideal standard), below = underweight; optional sex refinement narrows the band. This adult model is identical to our cat weight checker so the two tools never disagree, and it's validated by an automated fixture test that runs on every site build.

• Association for Pet Obesity Prevention — Ideal Breed Weight Ranges
• PetMD — What's the Average Healthy Cat Weight?
• Pawlicy Advisor — Cat Weight Chart by Age & Breed
• WSAVA Global Nutrition Committee — body condition scoring and the 20%-over-ideal obesity threshold.

Reviewed annually for citation currency. About Dr. Anand · Last reviewed July 26, 2026.

Embed this cat weight chart

Free for rescues, foster networks, veterinary educators, and cat blogs. Required attribution is included in the snippet — no fee, no account, no tracking.

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  Cat weight chart by
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  &middot; Reviewed by Dr. Priya Anand, DVM, ABVP (Feline)
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