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BMI Calculator – Body Mass Index

Calculate your BMI using metric or US units and see where you fall on the BMI scale.

Check Your BMI

BMI = weight / height². It’s a quick screening tool—not a diagnosis. For personal advice, talk to a clinician.

What is BMI?

Body Mass Index (BMI) estimates body fat from weight and height. It’s widely used for population screening and general guidance. Categories (adult): <18.5 underweight, 18.5–24.9 healthy, 25–29.9 overweight, ≥30 obesity.

How to Use This BMI Calculator

  1. Pick your unit system: Metric (kg, cm) or US (lb, ft/in).
  2. Enter your weight and height. Accuracy improves with precise inputs.
  3. Tap Calculate BMI. You’ll see your BMI and category highlighted.

Helpful Notes

  • BMI is a screen, not a diagnosis. It doesn’t directly measure body fat, muscle, or distribution.
  • For athletes, seniors, growing teens, or people with certain health conditions, BMI may misclassify.
  • Discuss results with a qualified health professional for personalized advice.

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Healthy Habits

  • Combine balanced nutrition with regular activity.
  • Track trends over time rather than a single number.
  • Aim for sleep, stress management, and hydration.

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