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BMI Calculator

Calculate Body Mass Index from height and weight with instant health category feedback

Utility Tools

About This Tool

The BMI Calculator computes your Body Mass Index by dividing your weight in kilograms by the square of your height in centimeters. It instantly classifies your result into health categories — Underweight, Normal, Overweight, or Obese — helping you assess your weight status quickly and privately.

Key Features

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Use Cases

bmi calculator health weight

Frequently Asked Questions

What is the BMI Calculator?

The BMI Calculator is an online Utility Tool that calculates your Body Mass Index from height and weight inputs, providing instant BMI value and health category classification. It runs entirely in your browser with no data sent to any server.

How is BMI calculated?

BMI is calculated by dividing your weight in kilograms by the square of your height in meters. The formula is BMI = weight / (height/100)². The result is then classified into categories: Underweight (<18.5), Normal (18.5–24.9), Overweight (25–29.9), or Obese (≥30).

Is the BMI Calculator free to use?

Yes, the BMI Calculator is completely free to use. There are no hidden charges, subscriptions, or limitations. All features are available to everyone.

Is my data safe when using the BMI Calculator?

Absolutely. All processing happens locally in your browser. No data is uploaded to any server, ensuring your information remains completely private and secure.

Can I use the BMI Calculator on my phone?

Yes, the BMI Calculator is fully responsive and works on all devices including smartphones, tablets, and desktop computers.