Last updated: October 3, 2026
Cat Weight Chart
Every key cat weight chart in one place. See the healthy adult range, a kitten-to-adult chart by age, typical weights by breed, healthy ranges by frame, and a kg to lb quick reference. Use it as a fast starting point, then follow the links for the deeper guides.
How much should a cat weigh?
Most adult domestic cats weigh 8-12 lb (3.6-5.4 kg). That is the guideline for an average cat, and the healthy range varies by breed and frame: small cats can be healthy at 5-8 lb, while large breeds like the Maine Coon are normal well above 12 lb. Check your own cat with the Cat Weight Calculator.
Cat Weight Chart by Age (lb & kg)
Expected weight ranges for an average domestic cat from newborn kitten to adult
| Age | Weight (lb) | Weight (kg) |
|---|---|---|
| 2 weeks | 0.25–0.5 lb | 0.1–0.2 kg |
| 4 weeks (1 month) | 0.5–1.0 lb | 0.2–0.5 kg |
| 6 weeks | 1.0–1.5 lb | 0.5–0.7 kg |
| 8 weeks (2 months) | 1.5–2.0 lb | 0.7–0.9 kg |
| 12 weeks (3 months) | 2.0–4.0 lb | 0.9–1.8 kg |
| 16 weeks (4 months) | 3.0–5.5 lb | 1.4–2.5 kg |
| 6 months | 5.0–7.0 lb | 2.3–3.2 kg |
| Adult (1 year+) | 8.0–12.0 lb | 3.6–5.4 kg |
A useful rule of thumb is that kittens gain about 1 lb (roughly 0.45 kg) per month for the first 6 months. For the full month-by-month version, with every age from 3 months to senior, see our cat weight by age chart.
Cat Weight Chart by Breed (lb & kg)
Typical adult weight ranges for common cat breeds
| Breed | Adult weight (lb) | Adult weight (kg) |
|---|---|---|
| Siamese | 8–12 lb | 3.6–5.4 kg |
| Domestic Shorthair | 8–12 lb | 3.6–5.4 kg |
| American Shorthair | 8–15 lb | 3.6–6.8 kg |
| Persian | 7–12 lb | 3.2–5.4 kg |
| British Shorthair | 9–17 lb | 4.1–7.7 kg |
| Ragdoll | 10–20 lb | 4.5–9.1 kg |
| Maine Coon | 12–25 lb | 5.4–11.3 kg |
| Bengal | 8–15 lb | 3.6–6.8 kg |
| Sphynx | 6–12 lb | 2.7–5.4 kg |
| Abyssinian | 6–10 lb | 2.7–4.5 kg |
| Norwegian Forest Cat | 12–22 lb | 5.4–10.0 kg |
Males usually sit at the heavier end of each range and females at the lighter end. For more breeds and detail on each, see our full average cat weight by breed guide.
Healthy Weight Ranges by Frame
Body frame shifts the healthy range as much as breed does
| Frame | Weight (lb) | Weight (kg) | Typical cats |
|---|---|---|---|
| Small frame | 5–8 lb | 2.3–3.6 kg | Petite breeds and small females, such as many Abyssinians and lighter domestic cats |
| Medium frame | 8–12 lb | 3.6–5.4 kg | The typical range for most adult domestic cats |
| Large frame | 12–20 lb | 5.4–9.1 kg | Big breeds like the Maine Coon, Ragdoll, and Norwegian Forest Cat, which keep growing to 3-5 years |
Large breeds are the reason the top of this chart runs so high. Cats like the Maine Coon and Ragdoll keep growing until 3-5 years of age, so a heavy adult weight can be perfectly healthy for them. To tell a big frame apart from extra fat, check our is my cat overweight guide.
How to Use a Cat Weight Chart
A weight chart is a starting point, not a diagnosis. It tells you the expected range for an average cat by age, breed, or frame, but two healthy cats can sit at different weights. Use the chart to see roughly where your cat should land, then confirm with body condition rather than treating the number as a target.
Body condition score matters more than the scale. Feel along the ribs with light pressure: on a healthy cat you can feel them without pressing through a thick layer of fat. Look from above and you should see a slight waist behind the ribs, and from the side a gentle tuck rather than a sagging belly. If you cannot feel the ribs or see a waist, your cat may be carrying extra weight even if the number looks normal. Our cat body condition score guide walks through the full 9-point scale.
To weigh a cat at home, step on a bathroom scale and note your weight, then pick up your cat and weigh again. The difference is your cat's weight. Weighing at the same time of day and tracking the result over weeks makes small changes easier to spot. For a personalized read on whether your cat is in range, use the Cat Weight Calculator or check the Cat BMI Calculator.
Kg to Lb Quick Reference
Common cat weights converted between kilograms and pounds
| Kilograms | Pounds |
|---|---|
| 2.5 kg | 5.5 lb |
| 3.0 kg | 6.6 lb |
| 3.6 kg | 8.0 lb |
| 4.0 kg | 8.8 lb |
| 4.5 kg | 9.9 lb |
| 5.0 kg | 11.0 lb |
| 5.4 kg | 12.0 lb |
| 6.0 kg | 13.2 lb |
To convert on your own, multiply kilograms by 2.2 to get pounds, or divide pounds by 2.2 to get kilograms. For a full conversion table and worked examples, see our cat weight kg to lb guide.
Related Cat Weight Guides & Tools
This page pulls the key charts together in one place. To go deeper on any single angle, use these related guides and calculators:
- Cat weight by age The full month-by-month chart from newborn kitten to senior.
- Average cat weight by breed Detailed weight ranges across popular cat breeds.
- Senior cat weight Healthy weight and warning signs for older cats.
- Is my cat overweight? How to tell a healthy weight from extra fat.
- Cat body condition score The 9-point scale vets use to judge weight.
- Cat Nutrition Calculator Estimate daily calorie needs by weight and life stage.
- Cat Weight Guides Every guide on cat weight, growth, and feeding in one place.
A note on using these charts
Every chart on this page is general guidance for an average domestic cat, not a diagnosis. Breed, frame, sex, and whether a cat is spayed or neutered all shift the healthy range. Body condition, feeling the ribs and seeing a waist, matters more than any single number. If your cat sits well outside these ranges, or its weight changes suddenly, check with your veterinarian.
Frequently Asked Questions About Cat Weight Charts
Common questions about healthy cat weight by age, breed, and frame
How much should a cat weigh?
Most adult domestic cats weigh 8-12 lb (3.6-5.4 kg). This is a guideline for an average cat, and the healthy range shifts with breed and frame. Small-framed cats can be healthy at 5-8 lb, while large breeds like the Maine Coon are normal well above 12 lb. Body condition matters more than the number alone.
What is a healthy weight for a cat in kg?
A healthy adult cat usually weighs 3.6-5.4 kg. Smaller cats may sit around 2.3-3.6 kg and large breeds run higher, often 5.4-9 kg. Use body condition to confirm: you should be able to feel the ribs with light pressure and see a slight waist from above.
How do I read a cat weight chart?
A cat weight chart gives an expected range, not a target to hit exactly. Find your cat by age, breed, or frame, then compare its actual weight to that range. Treat the chart as a starting point and check body condition score alongside it, since two healthy cats of the same age can sit at different weights.
How much should a 6 month old kitten weigh?
A 6 month old kitten typically weighs 5-7 lb (2.3-3.2 kg) and has reached about 75% of its adult size. Large breeds will be heavier at this age and keep growing for much longer.
What is the average weight of a domestic cat?
The average domestic shorthair or mixed-breed cat weighs 8-12 lb (3.6-5.4 kg) as an adult. Purebred cats vary widely, from petite breeds near 6 lb to giant breeds over 20 lb, so breed is the biggest reason a cat sits outside the average.
How do I weigh my cat at home?
Step on a bathroom scale and note your weight, then pick up your cat and weigh again. The difference is your cat. A digital scale gives the most consistent reading, and weighing at the same time of day helps you track small changes over weeks.
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