BMI Calculator

Body Mass Index (BMI) is a screening indicator that relates body weight to height.

This tool quickly calculates your BMI and places it in a general category, but it does not provide a medical diagnosis.

The calculator uses two core inputs: body weight in kilograms and height in meters.

Correct unit entry matters; for example, 170 cm should be interpreted as 1.70 meters for the formula.

Standard formula: BMI = weight (kg) / [height (m)]². The tool applies this formula directly.

The output is then mapped to common adult category thresholds; children, teens, and special populations require different assessment methods.

BMI alone does not measure body fat percentage, muscle mass, waist circumference, metabolic risk, or medical history.

Treat the result as an early screening signal, not as a final conclusion about health status.

Example: with 78 kg and 1.75 m, BMI is 78 / (1.75×1.75) = 25.47.

A borderline value should be reviewed together with lifestyle factors, clinical findings, and follow-up measurements.

BMI can be less representative in people with high muscle mass, older adults, pregnancy, edema, or certain chronic conditions.

For medical decisions, consult your doctor. This tool is for informational use and should not be used alone for diagnosis or treatment decisions.