BMI Calculator

Calculate your Body Mass Index (BMI) and understand what it means for your health.

Formula Used

BMI = weight (kg) ÷ height² (m²)

How to Use

  1. Select Metric or Imperial units.
  2. Enter your height and weight in the input fields.
  3. Click Calculate BMI to see your result and category.
  4. Use Reset to clear all fields and results.

Frequently Asked Questions (FAQ)

What is BMI?

BMI (Body Mass Index) is a number calculated from your height and weight, used to screen for weight categories that may lead to health problems.

Is BMI a perfect measure of health?

No. BMI is a general guideline and does not account for muscle mass, bone density, overall body composition, or differences due to race and sex.

Can children or pregnant women use this calculator?

No. BMI is not suitable for children, pregnant women, or elderly individuals. Consult a healthcare provider for a proper assessment.

Is my data processed securely?

All calculations are done locally in your browser. No data is sent to any server.

Understanding BMI

Body Mass Index (BMI) is a measure of body fat based on height and weight that applies to adult men and women.

BMI Categories:

  • Severe Thinness:0 - 16
  • Moderate Thinness:16 - 17
  • Mild Thinness:17 - 18.5
  • Normal:18.5 - 25
  • Overweight:25 - 30
  • Obese Class I:30 - 35
  • Obese Class II:35 - 40
  • Obese Class III:40+

Limitations of BMI

BMI is a useful measurement for most people over 18 years old, but it has some limitations:

  • It may overestimate body fat in athletes and people with muscular builds.
  • It may underestimate body fat in older people and those who have lost muscle.
  • It doesn't account for factors like frame size, muscle mass, or fat distribution.
  • It is not applicable to children, pregnant women, or elderly individuals.

This calculator provides a rough estimate and should not replace medical advice. Consult with a healthcare provider for a proper assessment of your health.

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