BMI Calculator – Body Mass Index by Height & Weight

 

BMI Calculator

Definition & Purpose

Body Mass Index (BMI) estimates body fat using weight and height to assess health risks like heart disease or diabetes.

How to Use

1. Select Metric or Imperial units.
2. Enter weight and height.
3. Click Calculate BMI to see your result and classification.

Enter Your Details

Unit System: Metric (kg/cm) Imperial (lbs/in) Weight (kg): Height (cm):

BMI Categories

• Underweight: < 18.5
• Normal weight: 18.5 – 24.9
• Overweight: 25 – 29.9
• Obesity I: 30 – 34.9
• Obesity II: 35 – 39.9
• Extreme Obesity: 40+

Example

A person weighing 70 kg at 175 cm height has a BMI of 22.86 — considered Normal weight.