How Much Should My Cat Weigh? Healthy Ranges by Breed
Learn the ideal weight for your cat based on breed, size, and age. Includes a complete weight chart, signs of underweight/overweight cats, and a guide to keeping your cat at a healthy weight.
Maintaining a healthy weight is essential for your cat’s long-term health. Over 60% of cats in the U.S. are overweight or obese, increasing their risk of diabetes, arthritis, heart disease, and a shorter lifespan.
In this guide, you’ll find the recommended healthy weight ranges for the most common cat breeds, how to identify whether your cat is underweight or overweight, and what steps to take to keep your cat in optimal shape. For a personalized estimate, use the Cat Weight Calculator.
Why Your Cat’s Weight Matters
Just a few extra pounds can significantly affect your cat’s health. Overweight cats are up to 3× more likely to develop diabetes and joint problems. Underweight cats may suffer from nutrient deficiencies, illness, or muscle loss.
Your cat’s ideal weight depends on:
- Breed
- Body frame size
- Muscle mass
- Age
- Activity level
To get a personalized estimate, use the Cat Weight Calculator.
Healthy Cat Weight by Breed (2025 Guide)
Below are healthy weight ranges for the most popular cat breeds in the U.S. Remember: males tend to be heavier than females.
Small Breeds (5–10 lbs)
| Breed | Healthy Weight |
|---|---|
| Siamese | 6–10 lbs |
| Cornish Rex | 5–9 lbs |
| Devon Rex | 5–10 lbs |
| Singapura | 4–8 lbs |
Medium Breeds (8–12 lbs)
| Breed | Healthy Weight |
|---|---|
| Domestic Shorthair | 8–12 lbs |
| American Shorthair | 8–12 lbs |
| Bengal | 8–15 lbs |
| Russian Blue | 7–12 lbs |
Large Breeds (12–18 lbs)
| Breed | Healthy Weight |
|---|---|
| Ragdoll | 12–20 lbs |
| British Shorthair | 12–18 lbs |
| Persian | 7–14 lbs |
| Norwegian Forest Cat | 12–20 lbs |
Giant Breeds (15–25+ lbs)
| Breed | Healthy Weight |
|---|---|
| Maine Coon | 15–25+ lbs |
| Savannah Cat (F1–F3) | 15–30 lbs |
For mixed-breed cats, the Cat Weight Calculator provides personalized recommendations.
How to Tell If Your Cat Is Underweight
- Ribs easily visible
- Little or no fat on ribs or spine
- Pronounced waist and abdominal tuck
- Low muscle mass
- Dull coat or shedding
How to Tell If Your Cat Is Overweight
- Cannot easily feel ribs through fat
- No visible waistline
- Rounded belly or sagging abdomen (“belly pouch”)
- Panting or tiring quickly
- Reduced mobility
Compare your cat’s weight range using the Cat Weight Calculator.
Cat Body Condition Score (BCS)
Veterinarians use a 1–9 Body Condition Score system:
| Score | Condition | Description |
|---|---|---|
| 1–3 | Underweight | Visible ribs, minimal fat, sharp spine |
| 4–5 | Ideal | Waist visible, ribs easy to feel |
| 6–9 | Overweight/Obese | Fat over ribs, round stomach, no waistline |
Factors That Affect Cat Weight
Breed
Some breeds (like Maine Coons) naturally weigh more due to size and bone structure.
Age
- Kittens gain weight rapidly
- Adult cats stabilize between 1–7 years
- Senior cats may lose muscle mass
Activity Level
Indoor cats tend to be heavier than outdoor cats due to lower activity.
Spay/Neuter Status
Spayed/neutered cats may gain weight more easily due to hormonal changes.
How to Maintain a Healthy Weight
- Feed measured meals (avoid free-feeding)
- Choose high-quality food appropriate for age & activity
- Limit treats to 5–10% of daily calories
- Increase playtime with interactive toys
- Weigh your cat monthly
Use the Cat Calorie Calculator to determine exact daily calorie needs.
Conclusion
Every cat has a unique ideal weight based on breed, body structure, and lifestyle. Keeping your cat within a healthy range reduces disease risk and increases lifespan.
For a personalized recommendation, use the Cat Weight Calculator.
FAQ
How much should the average house cat weigh?
Most domestic shorthair cats should weigh between 8–12 lbs, depending on frame size.
Is 15 lbs too heavy for a cat?
It depends on the breed. For a Maine Coon, 15 lbs is normal. For a domestic shorthair, it may indicate overweight.
How can I tell if my cat is overweight?
If you cannot easily feel ribs, or there is no visible waistline, your cat may be overweight.
What is the healthiest way to help my cat lose weight?
Reduce calories gradually, increase playtime, and use a calorie calculator to determine ideal intake.