BMI Calculator

Part of Calculators

Body Mass Index (BMI) is a measure of body fat based on height and weight that applies to adult men and women. It is a helpful standard index utilized by healthcare professionals to screen for weight categories.

Calculation Formula Rules

BMI = weight (kg) / [height (m)]² or BMI = 703 × weight (lbs) / [height (in)]²

How to Use BMI Calculator

  1. Select your measurement standard: Imperial (lbs/inches) or Metric (kg/cm).
  2. Enter your weight and height values into the respective fields.
  3. Click 'Calculate BMI' to render your metric score.
  4. Observe your score color-mapped against WHO ranges (Underweight, Normal, Overweight, Obese).

Practical Calculation Examples

Example Scenario

Height: 180 cm | Weight: 75 kg

BMI: 23.15 (Normal Weight range)

A BMI of 23.15 falls safely within the optimal health range of 18.5 to 24.9.

Frequently Asked Questions (FAQ)

What is a healthy BMI level?
For adults, a healthy BMI is classified between 18.5 and 24.9. Scores below 18.5 are underweight, while scores above 25 fall in the overweight range.
Does BMI measure body fat directly?
No, BMI is a general statistical proxy. It does not directly calculate fat percentages and can occasionally overestimate weight classes for professional athletes or highly muscular individuals.