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How to Calculate BMI Online for Free

📅 March 15, 2026  •  ⏱ 1 min read

What is BMI?

Body Mass Index (BMI) is a measure of body fat based on height and weight. It helps determine if you are underweight, normal, overweight, or obese.

How to Use the BMI Calculator

Visit our Free BMI Calculator, enter your height and weight, and get your result instantly.

BMI Categories

  • Underweight: BMI less than 18.5
  • Normal weight: 18.5 to 24.9
  • Overweight: 25 to 29.9
  • Obese: BMI 30 or higher

Use our Calorie Calculator to complement your BMI results.