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BMICalculator

Calculate your Body Mass Index using the standard WHO formula — in metric (kg/cm) or imperial (lb/ft-in) units.

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BMI Calculator

Body Mass Index — a quick general screening measure using the standard WHO formula.

kg
cm

Your BMI

24.2

Category: Normal

WHO BMI Categories (Adults)

UnderweightBelow 18.5
Normal weight18.5 – 24.9
Overweight25.0 – 29.9
Obese30.0 and above

Disclaimer: BMI is a general screening tool based on height and weight only — it does not account for muscle mass, bone density, age, sex or overall body composition, and is not a medical diagnosis. Consult a qualified healthcare professional for personal health advice.

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Frequently Asked Questions

What is BMI and how is it calculated?

Body Mass Index (BMI) is calculated as weight in kilograms divided by height in metres squared (BMI = kg ÷ m²). It's a simple screening tool used worldwide to categorise weight ranges relative to height.

What are the standard BMI categories?

Per WHO guidelines for adults: below 18.5 is Underweight, 18.5–24.9 is Normal weight, 25.0–29.9 is Overweight, and 30.0 and above is Obese.

Is BMI accurate for everyone?

No — BMI does not distinguish muscle mass from fat mass, so it can overestimate body fat in athletes and underestimate it in older adults who've lost muscle. It's a general screening tool, not a diagnosis.

Can I use pounds and feet/inches instead of kg and cm?

Yes — toggle to "Imperial (lb / ft-in)" mode above and enter your weight in pounds and height in feet and inches.

Should I make health decisions based on BMI alone?

No — always consult a qualified healthcare professional for personal health advice. BMI is one general indicator among many and doesn't account for individual factors like body composition, age, or medical history.

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