Ideal cat weight by breed: weight table and BCS guide

Your cat’s ideal weight cannot be reduced to one number. Breed, sex, age, frame, muscle mass, neutering status and body condition all matter. A 3 kg Siamese and a 7 kg Maine Coon can both be healthy when the weight fits their body.

A breed weight table is useful as a starting point, but cats need an extra layer of assessment: Body Condition Score (BCS). The best approach is to combine the current weight, BCS and the trend over time.

Important: these values are reference ranges for adult cats. Do not start a diet only because your cat is outside a table range. Check body condition and speak with your veterinary clinic, especially if weight change is fast or your cat has symptoms.

Quick answer: how do I know if my cat is at a healthy weight?

A cat is usually in good condition when:

ribs are easy to feel with a light fat cover,
a slight waist is visible from above,
the belly does not have firm generalized fat,
weight stays stable over time,
muscle over the spine and hips feels normal.

The primordial pouch can hang even in healthy cats, so do not judge weight by the belly alone.

Cat weight table by breed

Breed	Male	Female
Domestic Shorthair / mixed cat	3.5–5.5 kg / 8–12 lb	3–5 kg / 7–11 lb
Siamese	3.5–5.5 kg / 8–12 lb	2.5–4.5 kg / 6–10 lb
Persian	4–6 kg / 9–13 lb	3–5 kg / 7–11 lb
Maine Coon	6–8.5 kg / 13–19 lb	4–6.5 kg / 9–14 lb
Ragdoll	5.5–9 kg / 12–20 lb	4.5–7 kg / 10–15 lb
British Shorthair	5–8 kg / 11–18 lb	3.5–5.5 kg / 8–12 lb
Bengal	4.5–7 kg / 10–15 lb	3.5–5.5 kg / 8–12 lb
Sphynx	3.5–5.5 kg / 8–12 lb	3–4.5 kg / 7–10 lb
Russian Blue	4–6 kg / 9–13 lb	3–4.5 kg / 7–10 lb
Norwegian Forest Cat	5–8 kg / 11–18 lb	3.5–6 kg / 8–13 lb
Siberian	5–8 kg / 11–18 lb	3.5–6 kg / 8–13 lb
Abyssinian	3.5–5 kg / 8–11 lb	2.5–4 kg / 6–9 lb
Burmese	4–6 kg / 9–13 lb	3–5 kg / 7–11 lb
Scottish Fold	4–6 kg / 9–13 lb	3–5 kg / 7–11 lb
Devon Rex	3–4.5 kg / 7–10 lb	2.5–4 kg / 6–9 lb
Cornish Rex	3–4.5 kg / 7–10 lb	2.5–4 kg / 6–9 lb
Birman	4.5–6.5 kg / 10–14 lb	3.5–5.5 kg / 8–12 lb
American Shorthair	4–7 kg / 9–15 lb	3.5–5.5 kg / 8–12 lb
Exotic Shorthair	4–6 kg / 9–13 lb	3–5 kg / 7–11 lb
Oriental Shorthair	3.5–5.5 kg / 8–12 lb	2.5–4.5 kg / 6–10 lb

These are broad orientation ranges. For kittens, seniors, very muscular cats, cats with chronic disease or mixed-breed cats, BCS and trend are more useful than the table alone.

Dogtorcito helps you keep weights, dates and context together so you can see your cat’s real trend.

Organize your cat’s weight tracking

Why the table is not enough

The number on the scale can be misleading. A cat may weigh more because they are large and muscular, or less because they have lost muscle. Coat length, posture and the primordial pouch can also change how the body looks.

Use the table as a starting point, not a diagnosis. To decide whether weight is healthy, combine:

The number on the scale.
Rib, waist and belly checks.
The trend across several weeks or months.
Appetite, energy, litter box changes and behavior.

Body Condition Score for cats

BCS is often measured from 1 to 9:

BCS	Meaning
1–3	Underweight. Ribs, spine or hips may feel too prominent.
4–5	Ideal range. Ribs are easy to feel, waist visible from above.
6–7	Overweight. Ribs are harder to feel, waist less defined.
8–9	Obesity. Ribs are difficult or impossible to feel, clear fat deposits.

Check calmly:

Ribs: run your fingers along both sides of the chest.
Waist: look from above for a slight narrowing behind the ribs.
Side profile: distinguish the primordial pouch from firm fat.
Muscle: senior cats can lose muscle even when total weight seems stable.

How often to weigh a cat

Situation	Suggested frequency
Healthy adult, stable weight	Once a month
Senior cat	Every 2–4 weeks
Supervised weight-loss plan	Every 1–2 weeks
Recent weight loss	As your veterinarian recommends
Kidney disease, diabetes, hyperthyroidism or chronic disease	According to the veterinary plan

Use the same scale whenever possible and weigh in similar conditions: same time of day, before food and when your cat is calm.

When to call the vet

Book a veterinary appointment if you notice weight loss despite normal or increased appetite, reduced appetite, vomiting, diarrhoea, constipation, more thirst, more urination, hiding, avoiding jumps or fast weight gain.

In cats, weight loss can appear with dental, digestive, kidney, endocrine or chronic pain problems. Overweight also increases metabolic and joint risk.

What records to keep for weight tracking

To make the history useful at a vet visit, emergency or clinic change, keep:

Weight and date.
BCS or short body condition note, if your vet has shown you how to assess it.
Food type and approximate food amount.
Treats, wet food and diet changes.
Appetite, thirst, urination, stools, vomiting and energy.
Medication, tests and veterinary recommendations.
Side and top-view photos if you are tracking a change.

How Dogtorcito helps

Dogtorcito keeps weights, dates, notes and documents in one place.

Weight tracking

Save each weigh-in with its date and review the trend over time.

Breed ranges and trends

Use the table as a starting point and compare it with your cat’s real body condition. The most useful signal is whether weight stays stable, rises or falls over time.

Complete health history

Save food, symptoms, veterinary recommendations, vaccines, treatments and documents in your cat’s profile.

Multiple pets, separate records

Each pet keeps their own calendar, reminders and health timeline.

Track your cat’s weight in Dogtorcito so you can arrive at the vet with clear data, not just a hunch.

Track your cat’s weight in Dogtorcito

FAQ

Is there an ideal weight for every cat breed?

There are useful ranges, but not one perfect number. Frame, sex, muscle mass and BCS matter too.

Is my cat overweight if they are above the table?

Not automatically. Large or muscular cats may sit above a range and still be healthy. If ribs are hard to feel and the waist is disappearing, ask your vet.

Can I use this table for kittens?

No. Kittens grow quickly and need a growth plan, not an adult weight target.