Skip to main content

Cat Healthy Weight Calculator

Find your cat's ideal weight using the Body Condition Score (BCS) system and get personalized weight management guidance.

Calculator Inputs

Cat Details

Enter your cat's current weight and assess their body condition

Weigh your cat at the same time each day for consistency

Use the guide below if you're unsure how to assess your cat

This calculator provides general guidance only and is not a substitute for professional veterinary advice. Always consult your vet for health concerns.

Frequently Asked Questions

What is a healthy weight for a cat?
Most domestic cats have an ideal weight between 3.5-5.5 kg (8-12 lbs), though this varies by breed and frame size. Maine Coons can healthily weigh 6-11 kg, while Siamese cats may be ideal at 3-4 kg. The Body Condition Score (BCS) is more reliable than weight alone for assessing if your cat is at a healthy weight.
What is Body Condition Score (BCS)?
Body Condition Score is a 1-9 scale used by veterinarians to assess a cat's body fat. A score of 5 is ideal: ribs easily felt with slight fat covering, visible waist from above, and a slight belly tuck from the side. Each point above or below 5 represents approximately 10% deviation from ideal weight.
How can I help my overweight cat lose weight safely?
Safe cat weight loss should not exceed 1-2% of body weight per week to prevent hepatic lipidosis (fatty liver disease). Reduce daily calories by 15-20%, increase playtime to 15-20 minutes daily, use puzzle feeders to slow eating, and have regular vet check-ups. Never crash diet a cat—gradual reduction is essential.