Can I give my height in feet and my weight in kilograms?

Yes, and that combination is common in India. Every measurement here carries its own unit, so there is no system to choose and no conversion to do in your head first.

Is BMI accurate for everybody?

No. It cannot distinguish muscle from fat, so athletes are routinely classified as overweight. It ignores where weight is carried, though abdominal fat carries far more risk. And it was derived from European populations, which is why Asian health bodies use lower thresholds.

What counts as a healthy BMI?

The widely used range is 18.5 to 25. Indian and other Asian guidelines set the upper bound at 23, because risk appears at a lower index in South Asian populations. Which applies to you depends on which guidance your doctor follows.

Should I be worried about my number?

Not on its own. BMI is a rough population statistic, and a single figure derived from two measurements cannot assess an individual. Waist measurement, blood pressure and blood tests all tell a doctor more.

BMI Calculator

Body mass index in whatever units you think in, with the healthy range.

Everything runs inside your browser. Your files never leave your device.

Result

The result appears here as you type.

Ask about BMI Calculator

Questions about what this tool does, which option to pick, or what it can and cannot handle.

The question you type here is sent to an AI provider to be answered — your files and whatever you put in the tool above are not, and the assistant cannot see them. Answers are generated and can be wrong. The tool itself is not guessing: it runs deterministic code on your device.

About the BMI Calculator

Body mass index divides weight by the square of height. It was devised in the 1830s by a Belgian statistician studying populations, and it was never intended as a measure of an individual's health — a fact worth holding onto before reading anything into the number it produces.

This calculator asks for a height and a weight, each with its own unit. There is no metric or imperial switch anywhere on it, and that is deliberate. Plenty of people give their height in feet and inches and their weight in kilograms, which is entirely normal in India and belongs to neither system. Asking someone to choose a system forces them to answer a question they do not have, so each measurement carries its own unit picker and any combination works.

The result includes the healthy weight range for your height, reported in the units you typed rather than converted into something else. That range is usually more useful than the index itself, since it answers the question people actually have.

What BMI genuinely tells you: whether your weight is unusual for your height, in a population sense. What it does not: anything about body composition. Muscle is denser than fat, so a fit and muscular person is routinely classified as overweight by a formula that cannot distinguish the two. It also takes no account of where weight is carried, and abdominal fat carries substantially more risk than the same weight elsewhere.

The thresholds themselves were derived from European and North American populations, and health bodies in India and across Asia use lower cut-offs — overweight from 23 rather than 25 — because cardiometabolic risk appears at a lower index in South Asian populations. A single global set of thresholds was never going to fit everybody.

Treat it as one rough number among several, not as a verdict.

How to use it

1Enter your height and pick its unit — centimetres, or feet and inches, whichever you think in.
2Enter your weight and pick its unit independently. Feet with kilograms is a perfectly ordinary combination.
3Read the index, and then the healthy weight range for your height, which is reported in the units you typed.
4Treat the result as a rough population statistic rather than an assessment of your health.

Questions

Can I give my height in feet and my weight in kilograms?: Yes, and that combination is common in India. Every measurement here carries its own unit, so there is no system to choose and no conversion to do in your head first.
Is BMI accurate for everybody?: No. It cannot distinguish muscle from fat, so athletes are routinely classified as overweight. It ignores where weight is carried, though abdominal fat carries far more risk. And it was derived from European populations, which is why Asian health bodies use lower thresholds.
What counts as a healthy BMI?: The widely used range is 18.5 to 25. Indian and other Asian guidelines set the upper bound at 23, because risk appears at a lower index in South Asian populations. Which applies to you depends on which guidance your doctor follows.
Should I be worried about my number?: Not on its own. BMI is a rough population statistic, and a single figure derived from two measurements cannot assess an individual. Waist measurement, blood pressure and blood tests all tell a doctor more.