Cat Weight Loss Calculator
Create a safe, vet-approved weight loss plan for your cat
Current Weight (lbs)
Target Weight (lbs)
🐾 Loss Rate
🍱 Food Type
How to Help Your Cat Lose Weight Safely
More than 59% of cats in the United States are overweight or obese, making it the most common preventable health condition in domestic cats. Helping your cat reach a healthy weight can add years to their life and significantly improve their quality of life. Our cat weight loss calculator gives you a science-based calorie target and estimated timeline to reach your cat’s goal weight.
Safe Weight Loss Rate for Cats
Cats should lose weight slowly — no more than 0.5–1% of body weight per week. For a 15 lb cat, that’s just 1–2 oz per week. This may seem slow, but rapid weight loss in cats is dangerous and can trigger hepatic lipidosis (fatty liver disease), a potentially fatal condition.
Cat Weight Loss Tips That Actually Work
- ✅ Switch to wet food — more filling, fewer calories per gram than dry
- ✅ Measure every meal — use a digital kitchen scale, not just a cup
- ✅ Split into 2–3 smaller meals — reduces begging and overeating
- ✅ Use a puzzle feeder — slows eating and adds mental stimulation
- ✅ Increase playtime — aim for 15–20 min of active play per day
- ✅ Eliminate treats temporarily — or count them toward daily calorie total
Use our cat weight calculator to first confirm your cat is overweight, then return here to build your weight loss plan.
Health Risks of Cat Obesity
- 🔴 Type 2 diabetes
- 🔴 Osteoarthritis and joint pain
- 🔴 Heart and respiratory disease
- 🔴 Urinary tract disease
- 🔴 Reduced life expectancy by up to 2.5 years
If your cat has been overweight for a long time, a routine blood test can check for early-onset diabetes or other metabolic conditions.
FAQs
How long does it take a cat to lose 2 pounds?
At a safe rate of 1% body weight per week, a 14 lb cat losing 2 lbs would take approximately 14–20 weeks. Patience is key — never rush feline weight loss.
What is the best food for cat weight loss?
High-protein, low-carbohydrate wet food is generally the best for feline weight loss. Prescription weight management diets (like Hill’s Metabolic or Royal Canin Satiety) are also highly effective and vet-recommended.
How many calories should an overweight cat eat?
Base your calculation on the target weight, not current weight, using 80% of the RER for that weight. Our cat calorie calculator can help you find the right starting point.
Conclusion
A healthy weight is one of the greatest gifts you can give your cat. Use our cat weight loss calculator to create a personalised plan, then track progress monthly. Small, consistent adjustments beat drastic cuts every time. When in doubt, always work with your vet.
Questions about your cat’s weight loss journey? Drop a comment below!