Cat BMI Calculator - Feline Body Mass Index (FBMI)

Cat BMI Calculator - Feline Body Mass Index (FBMI)

Cat BMI Calculator


15 - 29Normal weight
30 - 42Overweight

Consult Your Doctors for Further Investigation

Cat BMI Calculator Overview

  • Cat BMI Calculator is just one tool for assessing a cat's weight status and should be used in conjunction with other factors such as breed, age, and activity level.
  • Additionally, any concerns about your cat's weight should be discussed with a veterinarian, who can help determine the best course of action for your cat's individual needs.


How To Calculate Cat BMI

Here are steps to calculate Cat BMI.

  • Enter Rib Cage Circumference
  • Enter Length Of The Lower Back Leg
  • Calculate FBIM
  • Check The Weight Type Of Cat


Cat BMI Chart

Here are normal range of Cat BMI Chart or Feline Body Mass Index FBMI Chart.

FBMI Interpretation
< 15 Underweight
15 - 29.9 Normal weight
30 - 42 Overweight
42 Obese


Cat BMI Chart


How To Know If My Cat Is Overweight

Here are some signs that your cat may be overweight:

  • Difficulty feeling their ribs: When you run your hands along your cat's ribcage, you should be able to feel their ribs without pressing too hard.
  • A lack of a waist: When you look at your cat from above, they should have an hourglass figure, with a noticeable narrowing at the waistline.
  • Excessive belly fat: A large, protruding belly can be a sign that your cat is carrying excess weight.
  • Reduced activity level: If your cat is less active than usual or has trouble jumping or climbing, they may be overweight.
  • Labored breathing: Overweight cats may have difficulty breathing and pant more frequently.

If you think your cat may be overweight, it's essential to consult with your veterinarian to confirm and develop a plan to help your cat achieve a healthy weight.


How To Lose Cat BMI Weight

Helping a cat lose weight requires a combination of proper nutrition and exercise. Here are some steps you can take to help your cat lose weight and achieve a healthy BMI:

  • Before making any changes to your cat's diet or exercise routine, it's essential to consult with your veterinarian to ensure your cat is healthy and doesn't have any underlying medical conditions that could affect their ability to lose weight.
  • Feeding your cat smaller, more frequent meals throughout the day can help keep their metabolism steady and prevent overeating.
  • You can also consider using an automatic feeder to regulate portion sizes.
  • Look for cat food that is high in protein and low in calories, carbohydrates, and fat.
  • Avoid feeding your cat table scraps or treats, as these can contribute to weight gain.
  • Regular exercise is crucial for weight loss and maintaining a healthy BMI.
  • Try playing with your cat using toys or providing them with scratching posts or climbing structures to encourage physical activity.
  • Keep track of your cat's weight and BMI regularly, and adjust their diet and exercise routine accordingly.
  • It's important to remember that weight loss should be gradual and consistent, so be patient and stay consistent with your efforts.


Remember that a healthy diet and exercise routine are essential for maintaining your cat's overall health and well-being.


Cat BMI Calculator Benefits

Using a BMI calculator for cats can provide several benefits, including:

  1. Identifying potential health problems: An overweight or obese cat may be at a higher risk for health problems such as diabetes, heart disease, and arthritis. Calculating your cat's BMI can help you identify if they are at a healthy weight or if they need to lose weight to reduce the risk of these health problems.
  2. Setting weight loss goals: A BMI calculator can help you set realistic weight loss goals for your cat. Knowing your cat's BMI score can help you determine how much weight they need to lose and track their progress over time.
  3. Helping with portion control: Feeding your cat the right amount of food is important for maintaining a healthy weight. Calculating your cat's BMI can help you determine the appropriate portion size for your cat based on their weight and size.
  4. Promoting a healthy lifestyle: Calculating your cat's BMI can help you take an active role in promoting a healthy lifestyle for your cat. This includes providing a balanced diet, regular exercise, and scheduling regular check-ups with your veterinarian.



Overall, using a BMI calculator for cats can help you keep your cat healthy and reduce the risk of health problems associated with being overweight or obese. Check More Pet And Animal Related Calculators on Drlogy Calculator to get the exact solution for your questions.



  • Obesity in Cats | International Cat Care [1].
  • Measuring Your Cat's Body Mass Index - the FBMI [2].
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