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BMI Calculator

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Compute Body Mass Index (BMI) and discover your health category.

Privacy Secured: This utility runs 100% inside your browser. No files, logs, or values are uploaded to any server. Your information stays safe on your device.

About BMI Calculator

The BMI Calculator is a simple health utility designed to calculate your Body Mass Index (BMI) based on your weight and height. BMI is a widely used screening tool to identify weight categories (Underweight, Normal, Overweight, Obese) and potential health risks.

How it Works

Select either Metric or Imperial units. Adjust the height and weight sliders (or type them in). The calculator computes your BMI instantly and displays your category on a colored scale.

Key Features

  • Dual Units: Supports Metric (cm/kg) and Imperial (ft-in/lbs).
  • Colored Indicator: Visualizes your category on a color scale.
  • Health Tips: Displays category descriptions and recommendations.
  • Runs Locally: Private health data calculations.

Technical Details

The calculator computes BMI using the standard formula: $BMI = weight(kg) / height(m)^2$. Imperial units are converted to metric first. The category is determined using WHO guidelines: Underweight < 18.5, Normal 18.5-24.9, Overweight 25-29.9, Obese >= 30.

Common Use Cases

โ€ขFitness enthusiasts tracking weight categories.
โ€ขHealth-conscious individuals checking BMI scores.
โ€ขUsers monitoring weight changes over time.

Frequently Asked Questions

A normal BMI score is between 18.5 and 24.9, according to World Health Organization (WHO) guidelines.

No. BMI only measures relative weight based on height. It does not measure body fat directly or account for muscle mass.

Yes. All calculations are done locally in your browser. Your weight and height data are never uploaded.

๐Ÿ”’ Privacy Guarantee

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โœ“100% browser-based