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Cat BMI Checker (BCS)
Check your cat's body condition and calculate ideal weight using the BCS system
Input Information
BCS 5 — Ideal
Ribs felt but not visible. Clear waistline
Status
Ideal
BCS 5 / 9
Current Weight
4
kg
Ideal Weight
4
kg
Weight difference0 kg
Recommendation
Your cat is at an ideal weight. Maintain current diet and activity level.
BCS Reference Guide
| Score | Status | Description |
|---|---|---|
| 1 | Emaciated | Ribs, spine, pelvis bones clearly visible. Severe muscle loss |
| 2 | Very Thin | Ribs easily visible. Some muscle loss |
| 3 | Thin | Ribs easily felt and slightly visible. Pronounced waist |
| 4 | Lean | Ribs easily felt. Waist and abdominal tuck visible |
| 5 | Ideal | Ribs felt but not visible. Clear waistline |
| 6 | Slightly Overweight | Slight fat over ribs. Waist barely discernible |
| 7 | Overweight | Ribs difficult to feel. Increased abdominal fat |
| 8 | Obese | Ribs not easily felt. Abdomen rounded and sagging |
| 9 | Severely Obese | Cannot feel ribs. Severe abdominal sagging. Movement restricted |
What is BCS?
Body Condition Score is a 1–9 scale used by vets to assess fat coverage on a cat's body.
How to assess BCS
Run your hands along your cat's sides. If ribs are easily felt but not visible, that's BCS 5 (ideal).
Obesity Risk
Overweight cats are at higher risk for diabetes, arthritis, and urinary disease.
⚠️ Disclaimer: This tool provides estimates based on WSAVA BCS guidelines. Individual cats may vary. Always consult your veterinarian for a professional assessment.
