Body Mass Index (BMI) Calculator
Calculate your Body Mass Index (BMI) using either Metric or Imperial units and determine your weight category.
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Understanding the Body Mass Index
The **Body Mass Index (BMI)** is a simple calculation used by health professionals to estimate whether a person is underweight, a healthy weight, overweight, or obese. It provides a numerical value based on the ratio of a person's weight to the square of their height.
The BMI Formulas:
The calculation varies slightly depending on the unit system used:
- **Metric:** $BMI = \frac{\text{Weight (kg)}}{\text{Height (m)}^2}$
- **Imperial:** $BMI = \frac{\text{Weight (lb)}}{\text{Height (in)}^2} \times 703$
BMI Categories (Standard Adults):
The calculated score falls into one of four key categories:
- **Underweight:** BMI below 18.5
- **Healthy Weight:** BMI from 18.5 up to 24.9
- **Overweight:** BMI from 25.0 up to 29.9
- **Obesity:** BMI 30.0 and above