BMI Calculator – Body Mass Index & Weight Range
Calculate Body Mass Index (BMI), category, and healthy weight range for metric and imperial units.
About the BMI Calculator – Body Mass Index & Weight Range
Body Mass Index (BMI) is a standard screening measurement used by healthcare organizations to assess body weight relative to height for adults.
Standard BMI Formulas
Metric Formula:
BMI = Weight (kg) / [Height (m)]²
Imperial Formula:
BMI = 703 × Weight (lbs) / [Height (inches)]²
Worked Step-by-Step Examples
Metric Example: 70 kg, 175 cm height
1. Convert height to meters: 175 cm = 1.75 m 2. Square height: 1.75 × 1.75 = 3.0625 3. Divide weight: 70 / 3.0625 = 22.85 (22.9 BMI - Normal weight)
Frequently Asked Questions
A normal BMI range is between 18.5 and 24.9 for adult men and women.