# BMI Calculator Formula: BMI Calculation - Body Mass Index (BMI) Calculator can be used to calculate BMI values based on their height and weight. BMI is a fairly reliable indicator of body fatness for most people. BMI = (weight) / (height * height) ---------------------------------------- - BMI table for Adults - WHO - Severe Thinness < 16 - Moderate Thinness 16 - 17 - Mild Thinness 17 - 18.5 - Normal 18.5 - 25 - Overweight 25 - 30 - Obese Class I 30 - 35 - Obese Class II 35 - 40 - Obese Class III > 40 Reference ----------- [WHO](https://www.emro.who.int/nutrition/information-resources/bmi-calculator.html)