BMI Calculator (Body Mass Index)
Calculate Body Mass Index (BMI) and healthy weight targets (WHO standards). Estimates only, not medical diagnosis.
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About this Calculation
Calculate Body Mass Index (BMI) and healthy weight targets (WHO standards). Estimates only, not medical diagnosis.
BMI Calculator (Body Mass Index) Formula
Body Mass Index (BMI) is a standardized screening metric established by the World Health Organization (WHO) to categorize body mass based on tissue mass and height.
WeightBody weight measured in kilograms (kg)HeightStature measured in meters (m)- 1Convert height from centimeters to meters: height (m) = height (cm) / 100.
- 2Multiply height in meters by itself to calculate height squared (m²).
- 3Divide body weight in kilograms by height squared.
- 4Evaluate result against WHO classification: Underweight (<18.5), Normal (18.5–24.9), Overweight (25–29.9), Obese (≥30).
Worked Example: Real-time Evaluation
Mathematical Execution: Using the active input parameters, the in-browser execution engine evaluates the mathematical formula with zero latency.
Frequently Asked Questions
Assumptions & Accuracy
- Assumes standard standard-state values
- Rounded to standard decimal precision
Accuracy Note: Accurate to standard floating point precision.
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