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 over ribs or spine
- Pronounced waist and abdominal tuck
- Low muscle mass
- Dull coat or shedding
How to Tell If Your Cat Is Overweight
- Hard to feel ribs through fat
- No visible waist
- Rounded or sagging abdomen
- Panting or low stamina
- Reduced mobility
Compare your cat’s range using the Cat Weight Calculator.
Cat Body Condition Score (BCS)
Vets use a 1–9 Body Condition Score:
| Score | Condition | Description |
|---|---|---|
| 1–3 | Underweight | Ribs visible, minimal fat, sharp spine |
| 4–5 | Ideal | Visible waist, ribs easy to feel |
| 6–9 | Overweight / Obese | Fat covering ribs, round stomach, no waist |
Factors That Affect Cat Weight
Breed
Some breeds naturally weigh more due to bone density and size.
Age
- Kittens gain weight rapidly
- Adults stabilize between 1–7 years
- Seniors may lose muscle mass
Activity Level
Indoor cats tend to weigh more due to lower exercise.
Spay/Neuter Status
Hormonal changes can increase appetite and fat storage.
How to Maintain a Healthy Weight
- Feed measured meals (avoid free-feeding)
- Choose high-quality food appropriate for age
- Limit treats to 5–10% of daily calories
- Increase playtime
- Weigh monthly
Use the Cat Calorie Calculator to determine exact calorie needs.
Conclusion
Every cat has a unique ideal weight based on breed, structure, and activity. Keeping your cat within a healthy range protects against disease and increases lifespan.
For a personalized healthy range, use the Cat Weight Calculator.
FAQ
How much should the average house cat weigh?
Most domestic shorthairs should weigh 8–12 lbs.
Is 15 lbs too heavy for a cat?
It depends on breed—normal for Maine Coons, high for smaller breeds.
How can I tell if my cat is overweight?
If ribs are hard to feel and the belly is rounded, your cat may be overweight.
What’s the healthiest way for a cat to lose weight?
Gradual calorie reduction, more play, and using a calorie calculator.