How to Use a BMI Calculator and Understand Body Mass Index Ranges

Body Mass Index (BMI) is an internationally recognized screening metric used by health organizations to categorize body weight relative to height.

Calculate your BMI using metric or imperial units with the Burnjet BMI Calculator.

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The BMI Formula #

• Metric Formula:
  $$\text{BMI} = \frac{\text{Weight (kg)}}{[\text{Height (m)}]^2}$$
• Imperial Formula:
  $$\text{BMI} = \frac{\text{Weight (lbs)} \times 703}{[\text{Height (in)}]^2}$$

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Standard WHO BMI Weight Categories #

Disclaimer: BMI is an informational screening guideline and does not account for muscle mass, bone density, or overall metabolic health. It is not medical advice.

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Related Calculators #

• Percentage Calculator: Calculate body fat and weight loss percentages.
• Age Calculator: Check chronological age milestones.