BMI Calculator formula
BMI = weight in kilograms / (height in meters x height in meters).
BMI equals weight in kilograms divided by height in meters squared.
A person weighing 70 kg with height 170 cm has a BMI near 24.2.
Complete the calculation in three steps
- Enter weight in kilograms.
- Enter height in centimeters.
- Review BMI value, health category, and visual category meter.
About this bmi calculator
BMI is a general screening number used to compare weight with height. The visual meter helps you quickly see whether the value falls into underweight, normal, overweight, or obesity range.
BMI does not measure body fat directly, so athletes, pregnant users, and people with unusual body composition should use it as a rough guide only.
Fast, private, and simple
Fast
Runs quickly in the browser so users can complete routine tasks without waiting for a server round trip.
Secure
Values, text, and files are handled locally wherever possible, helping users feel safer before they process anything.
Browser-based
Works on desktop and mobile with a lightweight static frontend that is safe for cPanel hosting.
Free
No signup wall, no watermark flow, and no bloated dashboard before the actual utility.
Frequently asked questions
Is BMI a medical diagnosis?
No. BMI is a general screening number and not a full health diagnosis.
Which units are supported?
This version uses kilograms and centimeters for speed.
Can athletes rely only on BMI?
Athletes may need body composition checks because BMI does not measure muscle mass.
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BMI Calculator helps you finish the task quickly with a static, browser-first workflow. Bookmark this page or share it when you need a fast utility that works without signup.
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