BMI Calculator
Calculate your Body Mass Index in metric or imperial units, free and instantly.
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Calculate your Body Mass Index in metric or imperial units, free and instantly.
Powered by AIVEXA
The BMI Calculator computes Body Mass Index from your height and weight using the standard formula weight(kg) ÷ height(m)², then classifies the result into underweight, normal, overweight or obese categories based on WHO reference ranges, giving a quick screening indicator of whether your weight is in a healthy range for your height.
BMI is a population-level screening tool, not a diagnosis — it does not distinguish muscle mass from fat, so athletes and very muscular individuals often show a higher BMI despite low body fat. Doctors in India frequently pair BMI with waist circumference for a fuller picture, since South Asians tend to develop metabolic risk at lower BMI thresholds than Western populations.
The WHO Asian cut-offs commonly used in India classify 18.5–22.9 as normal, 23–24.9 as overweight, and 25+ as obese — stricter than the standard Western thresholds of 25 and 30, because South Asians face higher diabetes and heart-disease risk at lower BMI.
No. BMI charts here are designed for adults; children need age- and sex-specific growth charts, and pregnant women should not use standard BMI categories since healthy weight gain during pregnancy is expected.
Most AIVEXA tools run entirely in your browser (client-side), which means your files and inputs are processed on your own device and are not uploaded to a server.
Yes — it works on any modern browser (desktop, Android or iOS) without installing an app, and it's free to use with no signup or watermark.
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