BMI Calculator

Calculate your Body Mass Index (BMI) to assess your weight category. Supports both metric (kg/cm) and imperial (lbs/ft-in) units. All processing happens client-side.

BMI Categories Reference

Underweight< 18.5
Normal18.5 - 24.9
Overweight25 - 29.9
Obese30+
018.5253040

How to Use the BMI Calculator

  1. Select your preferred unit system: Metric (kg/cm) or Imperial (lbs/ft-in).
  2. Enter your weight and height in the input fields.
  3. Click Calculate BMI to see your result with category classification.
  4. View the color-coded BMI scale to understand where you fall in the range.

What is BMI?

Body Mass Index (BMI) is a numerical value derived from your weight and height. It is calculated using the formula: weight (kg) divided by height (m) squared. BMI is widely used as a screening tool to categorize individuals into weight status categories such as underweight, normal weight, overweight, and obese.

Features

  • Toggle between metric and imperial units
  • Color-coded BMI categories for easy interpretation
  • Visual BMI scale reference chart
  • One-click copy result to clipboard
  • 100% client-side processing for full privacy
  • No data stored, no sign-up required