Free BMI Calculator – Check Your Body Mass Index Online

Enter your height and weight to calculate your Body Mass Index (BMI) and find out which health category you fall into — metric or imperial units supported.

What is this tool?

A BMI (Body Mass Index) Calculator is a free health screening tool that estimates body fat based on height and weight. It is used by doctors, nutritionists, fitness coaches, and individuals worldwide to quickly classify weight status as Underweight, Normal, Overweight, or Obese. While BMI does not measure body fat directly, it is a widely recognised first step in assessing weight-related health risks.

How to use this tool?

1. Choose Metric (kg/cm) or Imperial (lb/ft) units 2. Enter your height accurately 3. Enter your current weight 4. Click "Calculate BMI" to see your result 5. Review your BMI value and category with colour-coded feedback 6. Compare your result against the BMI chart to understand what your score means

Frequently Asked Questions

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