BMI Calculator
Check your Body Mass Index and see which category your result falls into.
Check your Body Mass Index and see which category your result falls into.
The BMI Calculator computes your Body Mass Index from your height and weight and instantly classifies the result into standard health categories. It provides a quick, objective screening metric to help you understand where you stand and whether a conversation with a healthcare professional might be beneficial.
Body Mass Index is a widely used screening metric that estimates body fat by dividing weight in kilograms by the square of height in meters. The resulting number places you into one of four categories: underweight, normal weight, overweight, or obese, based on thresholds established by the World Health Organization. While BMI does not directly measure body fat or account for muscle mass, it serves as a useful first indicator of potential weight-related health risks. This free, browser-based calculator delivers your BMI and classification instantly with no login or data sharing.
Enter your height in centimeters and your weight in kilograms. Click Calculate BMI and the tool instantly displays your BMI value along with the corresponding health category. All processing runs locally in your browser so no personal health information is transmitted. You can recalculate as often as you like to track changes over time or to check values for different family members. The tool is designed for quick, private self-screening and is not a substitute for professional medical advice.