Math & Calculation

BMI Calculator

Calculate your Body Mass Index (BMI), BMI Prime, and Ponderal Index instantly. Review detailed weight categories, risk evaluations, and target thresholds.


Calculator Options

Your calculated BMI is

22.9 kg/m²

Normal weight
BMI Prime0.91
Ponderal Index13.1 kg/m³

BMI Range Scale

22.9
15 (Under)18.525.030.035 (Obese)

Healthy Weight Range

Target Weight56.7 - 76.3 kgBased on standard WHO height-weight index formulas.

Weight Difference Status

AnalysisYou are in the healthy BMI weight range!

About BMI Calculator

The BMI Calculator computes your Body Mass Index, BMI Prime, and Ponderal Index instantly. It supports both metric and imperial measurement systems, providing immediate classification feedback.

By evaluating height and weight parameters client-side in your browser, the tool maps your results onto standard World Health Organization (WHO) ranges: Severe Thinness (< 16), Moderate Thinness (16 - 17), Mild Thinness (17 - 18.5), Normal (18.5 - 25), Overweight (25 - 30), and Obese classes I, II, and III.

While BMI is a useful screening tool for 90-95% of the population, it does not directly measure body composition or distinguish between muscle and fat mass. Muscular individuals, older adults, and children have varying body composition parameters that should be considered alongside BMI outcomes.

Frequently Asked Questions