Milo Quell

Free Tool

BMI Calculator

Find your Body Mass Index in seconds — in metric or imperial — along with your category and the healthy weight range for your height.

cm
kg

Your BMI

23.5

Healthy weight

Healthy weight range for your height

57–76 kg

BMI is a rough screening tool, not a diagnosis. It doesn't distinguish muscle from fat or account for age, sex and build. Treat it as one signal, not a verdict.

What BMI actually tells you

BMI is a single number that relates your weight to your height. It was designed for populations, not individuals — a fast way to flag whether someone's weight might warrant a closer look. That's its strength and its limit: useful as a screening signal, misleading if treated as a verdict.

It can't see the difference between muscle and fat, and it says nothing about where fat sits on your body — which matters more for health than the raw number. Read your result as a starting point for a conversation, not a diagnosis.

Frequently asked

How is BMI calculated?

BMI is your weight in kilograms divided by your height in metres squared (kg/m²). In imperial units it is weight in pounds divided by height in inches squared, multiplied by 703. This calculator does the conversion for you in either unit system.

What is a healthy BMI range?

The World Health Organization classifies a BMI below 18.5 as underweight, 18.5 to 24.9 as a healthy weight, 25 to 29.9 as overweight, and 30 or above as obese. The calculator also shows the actual weight range that corresponds to a healthy BMI for your specific height.

Is BMI an accurate measure of health?

BMI is a quick screening tool, not a diagnosis. It does not distinguish muscle from fat, and it does not account for age, sex, ethnicity or body composition — a very muscular person can register as overweight despite low body fat. Use it as one rough signal alongside other measures, not a verdict on your health.

What BMI is considered overweight or obese?

A BMI of 25 to 29.9 is classified as overweight, and 30 or above is classified as obese. These are population-level thresholds, so individual context matters — but they are the standard cut-offs used by health organizations worldwide.

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