BMI Calculator
FreeCalculate Body Mass Index (BMI) using metric or imperial units with standard WHO categories
Enter Measurements
WHO Adult BMI Reference Range
About BMI Calculator
BMI Calculator computes Body Mass Index (BMI) using metric (cm, kg) or imperial (feet, inches, lbs) measurements.
Results are presented with neutral, clinical World Health Organization (WHO) reference categories for adults.
Common Use Cases
- Tracking general weight status changes as part of a personal fitness routine
- Getting a quick BMI reference before a doctor's appointment
- Comparing metric and imperial measurements when switching health apps
How to Use BMI Calculator
- Select Metric or Imperial measurement unit toggle.
- Enter your Height and Weight.
- View your calculated BMI score and clinical WHO reference category.
Real-World Examples
Height: 170cm, Weight: 68kgBMI: 23.5 (Normal weight)Important Notes & Limitations
- BMI does not account for muscle mass, bone density, or fat distribution
- Not a substitute for professional medical assessment
Privacy & Data Security
BMI Calculator processes all operations 100% locally in your web browser memory. Your files, text snippets, and generated outputs are never stored, logged, or uploaded to any remote server.
Frequently Asked Questions
Underweight (< 18.5), Normal weight (18.5 – 24.9), Overweight (25 – 29.9), and Obese (≥ 30).
Yes, you can toggle between centimeters/kilograms and feet/inches/pounds seamlessly.
Yes, based on your height, it calculates your ideal normal weight range in kilograms or pounds.
BMI is a general adult screening tool; highly muscular individuals may register high BMI without excess body fat.