Calculate your Body Mass Index instantly.
BMI Calculator computes Body Mass Index from height and weight with category classification. See also: age-calculator or percentage-calculator.
To use BMI Calculator, first enter your weight in kilograms. Then, enter your height in centimeters. After that, click Calculate BMI to get your result instantly. The result appears instantly in your browser.
Worked example: Enter 65 kg and 170 cm. The calculator converts 170 cm to 1.70 m, then calculates 65 ÷ (1.70 × 1.70) = 22.5. This falls in the Normal range (18.5–24.9).
| Category | BMI range |
|---|---|
| Underweight | Below 18.5 |
| Normal | 18.5–24.9 |
| Overweight | 25.0–29.9 |
| Obesity | 30.0 and above |
BMI Calculator computes Body Mass Index from height and weight with category classification. It runs entirely in your browser, with no sign-up and no file uploads.
First, enter your weight in kilograms. Then, enter your height in centimeters. Click Calculate BMI to get your result instantly.
Yes - BMI Calculator is completely free and requires no account. Everything runs locally in your browser, so your inputs never leave your device.
BMI = weight in kilograms ÷ height in metres squared. Enter your height in centimetres — the calculator converts it to metres automatically.
Below 18.5 is underweight, 18.5–24.9 is normal, 25.0–29.9 is overweight, and 30.0 or above is obesity, the same WHO adult ranges this calculator applies.
Weight in kilograms and height in centimetres. This calculator is designed for adult BMI using metric inputs only.
The calculator applies the standard BMI formula and the WHO adult category thresholds, and rounds your result to one decimal place.
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