Calculate Body Mass Index
Our BMI (Body Mass Index) Calculator is a health screening tool designed to estimate body fatness based on an individual's weight and height. Operating with both Metric (kg/m²) and Imperial (lbs/in²) measurement systems, the calculator evaluates body mass against the World Health Organization (WHO) international classification standards: Underweight (<18.5), Normal Weight (18.5–24.9), Overweight (25.0–29.9), and Obesity (Class I: 30.0–34.9, Class II: 35.0–39.9, Class III: ≥40.0). It provides users with their calculated BMI score, their healthy weight bracket, and practical health recommendations.
Instant calculation supporting both Metric (kilograms, centimeters) and Imperial (pounds, feet, inches)
Clear color-coded visual indicator mapping exact placement within WHO weight categories
Calculates recommended healthy target weight boundaries tailored to your specific height
100% private in-browser screening—no health data is stored, tracked, or transmitted
Helps users understand epidemiological weight classifications without clinical jargon
Completely free with unlimited evaluations and zero registration barriers
1. Select your preferred measurement units: Metric (centimeters and kilograms) or Imperial (feet, inches, and pounds). 2. Enter your height and current body weight. 3. Click 'Calculate BMI' to process your biometric ratio. 4. Review your BMI score, your corresponding WHO weight classification, and the healthy weight range recommended for your height.
If you found BMI Calculator useful, try these similar tools:
1. Enter your weight in kilograms
2. Enter your height in centimeters
3. Click "Calculate BMI" to get your result
4. View your BMI category and health status