Help - Calculate Body Mass Index (bmi)

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Body Mass Index (BMI)

Purpose

The Body Mass Index (BMI) calculator determines BMI from body weight and height. BMI can be used as a screening measure to assess weight categories based on height.

Use Cases

  • Check whether your weight falls within a commonly used BMI range.
  • Monitor changes in BMI over time.

How to Use

  1. Enter your weight and height.
  2. Click Calculate to calculate your BMI.

Input Values

  • Weight — Body weight in lb, kg, etc.
  • Height — Body height in m, cm, ft, etc.

Other compatible units may also be entered.

Output Values

  • BMI — Body Mass Index, expressed in kg/m².

BMI Categories

BMI Category
Below 18.5 Underweight
18.5–24.9 Normal weight
25.0–29.9 Overweight
30.0 or above Obesity

BMI is a screening measure and does not directly measure body fat or diagnose an individual's health condition.