How to Calculate BMI Using Height and Weight | MiniToolBar

What Is Body Mass Index (BMI)?

Body Mass Index (BMI) is an internationally recognized screening tool developed to evaluate whether an adult has a healthy body weight in proportion to their height.

BMI Calculation Formulas

1. Metric Formula

BMI = Weight (kg) / [Height (m)]²

2. Imperial Formula (Pounds and Inches)

BMI = [Weight (lbs) × 703] / [Height (inches)]²

WHO BMI Weight Categories

BMI Range	Category Classification
Below 18.5	Underweight
18.5 – 24.9	Normal / Healthy Weight
25.0 – 29.9	Overweight
30.0 and Above	Obese

Check your number instantly using our free, private BMI Calculator.