How to Calculate BMI — Free BMI Calculator

Learn what BMI is and how to calculate it using our free BMI calculator.

Understanding BMI

Body Mass Index (BMI) is a screening tool that measures body fat based on height and weight. Use the BMI Calculator to find yours.

How to Calculate

  1. Enter your height
  2. Enter your weight
  3. Get your BMI score

BMI Categories

  • Under 18.5 — Underweight
  • 18.5-24.9 — Normal weight
  • 25-29.9 — Overweight
  • 30+ — Obese

Important Note

BMI is a screening tool, not a diagnostic measure. It doesn't account for muscle mass, bone density, or body composition. Consult a healthcare professional for personalized advice.

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Track your daily calorie needs alongside your BMI.