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BMI Calculator

Calculate BMI for adults and children — metric & imperial

Browser-based, files never uploaded Instant results Works on any device

How to use BMI Calculator

  1. 1Enter your weight and height
  2. 2Choose metric or imperial units
  3. 3Get BMI score and category
  4. 4View ideal weight range

About this tool

Calculate Body Mass Index (BMI) online. Supports metric (kg/cm) and imperial (lb/ft) units. Shows BMI category, healthy weight range.

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Frequently asked questions

What is a healthy BMI?

18.5–24.9 is considered healthy for adults.

Does BMI account for muscle mass?

BMI does not distinguish muscle from fat — athletes may have high BMI despite low body fat.