This page provides a **BMI calculator** online, free and without any ads or distractions. This is part of a series of free nutrition tools we provide at NutriAdmin.

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Please enter **weight** and **height** below to calculate BMI

BMI stands for **Body Mass Index**. It is a measure that uses a person's height and weight to estimate whether they have a *healthy body weight for their height*.

A BMI calculator allows you to enter height and weight (in your preferred units) to calculate BMI.

BMI is calculated by dividing a person's weight in kilograms by the square of their height in meters. The formula is:

BMI = weight (kg) / [height (m)]

^{2}

On the other hand, if calculating BMI using Lbs for weight and Ft/in for height, the formula is adjusted to:

BMI = weight (lbs) × 703 / (height (ft) × 12 + height (in))

^{2}

You can simply enter height and weight in your preferred units in the calculator above to get your result.

BMI is commonly used as a screening tool to categorize individuals into weight categories such as *underweight*, *normal weight*, *overweight*, and *obese*.

The **BMI calculator** can help you determine the BMI of a person and then compare it with the ranges below.

These are the ranges based on the World Health Organization's BMI values :

**Underweight**. BMI less than 18.4**Normal weight**. BMI between 18.5 and 24.9**Overweight**. BMI between 25 and 29.9**Obese**. BMI over 30

You can refer to the chart below for a visual representation of the different BMI ranges.

It's important to note that BMI is a simple measurement and doesn't directly measure body fat.

Due to the limitations of BMI, the formula may not be accurate for certain populations, such as *athletes with a higher muscle mass*, or for individuals with *specific health conditions*. Always consult with a healthcare professional for personalized health advice.

Check out this Wikipedia article for more information on the body mass index.

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