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Cat Body Condition Score Calculator

Understand your cat’s body condition with a guided, at-home check of the ribs, waist and belly. Explore the 1–9 feline BCS scale and learn what to discuss with your veterinarian.

✓ Interactive 3-step check✓ 9-point BCS guide✓ No sign-up needed
STEP 01 / BODY CONDITION CHECK

What does your cat’s body feel and look like?

Gently feel the ribs, then look from above and from the side. Choose the closest descriptions. Fur can hide body shape, so touch matters too.

1 · Feel the ribs

Use light fingertips along the rib cage; do not press hard.

2 · Look from above

Look for a waist immediately behind the ribs.

3 · Look from the side

Check the belly shape and any fat pad, without mistaking loose skin for fat.

5out of 9
IDEAL RANGE

Estimated body condition

This is an educational estimate, not a veterinary examination.

1 · Under ideal5 · Ideal9 · Over ideal

What this score suggests

Suggested next steps

    Important: This tool compares your three descriptions; it cannot perform a hands-on examination. If your answers disagree strongly, it will not assign a score.

    HOW TO CHECK

    Three clues, not just the number on the scale

    A cat’s body weight alone cannot tell you how much body fat they carry.

    01 · RibsFeel gently along the chest. At an ideal condition, ribs can be felt beneath a light covering of fat.
    02 · WaistView your cat from above. A waist should be visible behind the rib cage, although coat and build can affect the view.
    03 · AbdomenLook from the side for the belly outline. A loose primordial pouch is not, by itself, proof of excess body fat.

    Understanding the 1–9 cat BCS scale

    The WSAVA chart describes 1–4 as under ideal, 5 as ideal and 6–9 as over ideal. Some clinical guidance describes 4–5/9 as a goal for many pets. Individual cats need veterinary assessment, and a score of 6 may be acceptable in some older cats.

    Body condition score assesses fat stores—not muscle mass. Senior cats may lose muscle even when their body condition appears high. Ask your veterinarian about muscle condition scoring too.

    Source: WSAVA Feline Body Condition Score Chart (PDF) · WSAVA Global Nutrition Guidelines.

    Continue with MyyCat tools

    Use the score as context when discussing your cat’s nutrition and weight—not as a reason to change food abruptly.

    Cat Weight CalculatorUnderstand weight and life stage.Cat Calorie CalculatorExplore general energy estimates.Cat Food Amount CalculatorExplore food portions with calorie information.

    More guidance for everyday cat care

    Explore nutrition, behavior, grooming and routine care in the Complete Cat Care Manual.

    Explore the Cat Care Manual →

    Frequently asked questions

    What is an ideal body condition score for a cat?

    On the WSAVA 9-point chart, 5 is labeled ideal. Some veterinary guidance uses 4–5/9 as a goal for many pets. Your veterinarian can assess your individual cat.

    Can I calculate BCS from weight alone?

    No. BCS involves feeling the ribs and assessing body shape. Two cats at the same weight may have different body conditions.

    What if my cat’s ribs, waist and belly give different answers?

    Do not force a precise score. Long fur, loose abdominal skin, age, muscle loss and individual anatomy can complicate a home assessment. Ask your veterinarian for a hands-on BCS and muscle condition assessment.

    Should I immediately reduce my cat’s food if the score is high?

    No. Ask your veterinarian for a safe, individualized plan. Rapid weight loss or not eating can be dangerous for cats.

    Veterinary disclaimer: MyyCat provides general educational information. This self-check does not diagnose obesity, malnutrition or disease and cannot replace a veterinarian’s physical examination. If your cat has sudden weight changes, stops eating, seems unwell, or has a markedly low or high body condition, seek veterinary advice.