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BMI Calculator

Calculate your Body Mass Index instantly using metric or imperial units. Get your BMI score, health category, and a visual scale showing where you fall — with context to help you understand what the number means.

BMI Categories

Underweight
Below 18.5
Normal weight
18.5 – 24.9
Overweight
25.0 – 29.9
Obese
30.0 and above

For adults aged 18+. Not suitable for children or athletes.

How to use

  1. 1Choose your preferred unit system — Metric (cm / kg) or Imperial (ft, in / lbs) — using the toggle at the top.
  2. 2Enter your height and weight in the input fields.
  3. 3Click "Calculate BMI" to see your result instantly.
  4. 4Your BMI score and health category are shown with a visual scale so you can see where you stand.
  5. 5Click Reset to clear all fields and start over.

Why Use This Tool?

BMI is a widely used screening metric that gives a quick snapshot of whether your weight is in a healthy range for your height. While it is not a diagnostic tool, it is a useful starting point for health awareness. This calculator removes the manual formula work and supports both unit systems so anyone can get their result in seconds.

Frequently asked questions