BMI Calculator

Calculate your Body Mass Index instantly — supports metric and imperial units

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Weight
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Height
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Healthy Weight Range
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Indian BMI Category
How to Use the BMI Calculator
1
Choose your unit system — Metric (kg/cm) or Imperial (lb/ft)
2
Enter your weight and height in the fields provided
3
Click Calculate BMI to see your result instantly
4
Check your BMI category and healthy weight range
About This BMI Calculator

Body Mass Index (BMI) is a simple measure of body fat based on your height and weight. Our free BMI calculator gives you an instant reading along with your health category — underweight, normal weight, overweight, or obese.

For Indian users, we also show the South Asian BMI category, since health risks for Indians begin at a lower BMI threshold. The World Health Organization recommends that South Asians consider a BMI of 23 or above as overweight and 27.5 or above as obese.

While BMI is a useful screening tool, it doesn't directly measure body fat percentage and should be considered alongside other health indicators. Always consult a healthcare professional for medical advice.

Frequently Asked Questions
A normal BMI is between 18.5 and 24.9. Below 18.5 is underweight, 25–29.9 is overweight, and 30 or above is considered obese.
Yes. For South Asians, health risks begin at BMI 23 (overweight) and BMI 25 (obese), which is lower than the standard Western thresholds of 25 and 30.
BMI = weight in kg ÷ (height in metres)². For example: 70kg ÷ (1.75 × 1.75) = 22.9.
No. Children require age and gender-specific BMI percentiles. This calculator is designed for adults aged 18 and above.