Feline BMI Calculator

The Feline BMI Calculator estimates your cat's Body Mass Index using weight, body length, and ribcage circumference. This tool helps cat owners and veterinarians quickly assess pet health and identify weight issues early. Whether you are managing obesity, monitoring weight loss, or checking for diabetes risks, this calculator provides actionable insights.

Enter your cat's weight in kilograms (kg)
Measure from base of neck to base of tail in centimeters (cm)
Measure around the widest part of the ribcage in centimeters (cm)

How Feline BMI Is Calculated

Feline BMI estimates body fat percentage by comparing weight against specific skeletal measurements. First, the tool calculates the cat's frame size using body length and ribcage circumference. This step is vital because it distinguishes between large-boned and small-boned cats.

Next, it compares the actual weight to this frame to determine if mass is appropriate. Finally, it adjusts the score based on breed size and neutered status to account for metabolic differences. This method offers a more accurate health assessment than using weight alone.

What Your Feline BMI Means

Your Feline BMI score tells you if your cat is at a healthy weight for their specific body shape. This helps you take action before weight affects their quality of life.

Underweight (Less than 15): If the score is below 15, your cat may lack necessary fat reserves or muscle mass. This can be dangerous for energy levels. Increase their caloric intake with nutrient-rich food and check for underlying health issues.

Ideal Weight (15 to 25): A score between 15 and 25 indicates your cat is in the optimal range. This range supports longevity and minimizes strain on joints and organs. Maintain their current diet and exercise routine to keep them healthy.

Overweight (25 to 30): Scores between 25 and 30 suggest the cat is carrying extra pounds. This can cause early joint stress and reduced mobility. Consider portion control and interactive play to reduce weight.

Obese (Greater than 30): A score over 30 indicates high risks for diabetes, arthritis, and fatty liver disease. Consult a vet for a strict weight loss plan immediately to prevent serious illness.

This calculator is for informational purposes only and is not a substitute for professional veterinary advice. Always consult your veterinarian for medical diagnoses or treatment plans.

Recheck your cat's BMI every month to track progress or catch changes early.