A “normal” BMI for most adults is generally defined as between 18.5 and 24.9.

What is BMI?

Body Mass Index (BMI) is a simple calculation that uses your height and weight to estimate body fat and classify weight status. It is mainly a screening tool, not a full measure of health, and does not distinguish between fat and muscle.

Normal BMI Range

Most major health organizations use the same cutoffs for adults:

  • Underweight: BMI less than 18.5
  • Normal (healthy) weight: BMI 18.5–24.9
  • Overweight: BMI 25–29.9
  • Obesity: BMI 30 or higher

So, when people ask “what is normal BMI,” they usually mean the 18.5–24.9 band.

Simple BMI Category Table (HTML)

Here is a basic HTML table you can use:

html

<table>
  <thead>
    <tr>
      <th>BMI Category</th>
      <th>BMI Range (kg/m²)</th>
    </tr>
  </thead>
  <tbody>
    <tr>
      <td>Underweight</td>
      <td>&lt; 18.5</td>
    </tr>
    <tr>
      <td>Normal (Healthy) weight</td>
      <td>18.5 – 24.9</td>
    </tr>
    <tr>
      <td>Overweight</td>
      <td>25.0 – 29.9</td>
    </tr>
    <tr>
      <td>Obesity</td>
      <td>&ge; 30.0</td>
    </tr>
  </tbody>
</table>

These values reflect commonly used adult BMI categories in medical and public health guidance.

TL;DR: Normal BMI for most adults is 18.5–24.9, but BMI is only one indicator and doesn’t replace medical advice or a full health assessment.

Information gathered from public forums or data available on the internet and portrayed here.