# BMI Calculator

## Discover Your BMI with Our BMI Calculator

BMI, or Body Mass Index, is a measure of body fat based on your weight in relation to your height. It is a simple calculation that can be used to determine if you are underweight, normal weight, overweight, or obese.

Use our BMI calculator to calculate your BMI and determine your weight status.

## How to Use Our BMI Calculator

For adults of 20 years or older, choose the adult tab and input the height and weight information.

For children and teenagers younger than 20 years old, choose the child&teen tab and input the height, weight, age and gender information. Then Obtain the BMI results with a single tap.

## How is BMI calculated?

The formula to calculate BMI is: BMI = weight (kg) / (height (m) * height (m)).

## How to interpret BMI results for adults?

For adults, BMI is interpreted using the following categories. These categories are same for both men and women, and all ages above 20 years old.

- Underweight: BMI below 18.5.
- Normal weight: BMI of 18.5 to 24.9.
- Overweight: BMI of 25 to 29.9.
- Obese: BMI of 30 or higher.

## How to interpret BMI results for children and teenagers?

For children and teenagers younger than 20 years old, BMI is calculated the same way. But interpretation for children BMI also needs age and gender information, as body fat changes with age and gender.

For children and teenagers, BMI is interpreted by determining the percentile of the BMI on the CDC BMI growth chart for the age and gender.

- Underweight: BMI less than 5th percentile.
- Normal weight: BMI of 5th percentile to less than 85th percentile.
- Overweight: BMI of 85th percentile to less than 95th percentile.
- Obese: BMI of 95th percentile or higher.