Beyond Mirror

BMI Calculator

Body mass index (BMI) is a value derived from the mass (weight) and height of a person. The BMI is defined as the body mass divided by the square of the body height, and is expressed in units of kg/m2, resulting from mass in kilograms and height in metres.

The BMI may be determined using a table or chart which displays BMI as a function of mass and height using contour lines or colours for different BMI categories, and which may use other units of measurement (converted to metric units for the calculation).

The BMI is a convenient rule of thumb used to broadly categorize a person as underweight, normal weight, overweight, or obese based on tissue mass (muscle, fat, and bone) and height. Major adult BMI classifications are underweight (under 18.5 kg/m2), normal weight (18.5 to 24.9), overweight (25 to 29.9), and obese (30 or more). When used to predict an individual's health, rather than as a statistical measurement for groups, the BMI has limitations that can make it less useful than some of the alternatives, especially when applied to individuals with abdominal obesity, short stature, or unusually high muscle mass.

BMIs under 20 and over 25 have been associated with higher all-cause mortality, with the risk increasing with distance from the 20–25 range.

BMI Calculator for Adults

BMI Calculator

Use this calculator to check your body mass index (BMI).

Metric Imperial

Height

cm.

Please enter value between 125 and 225.

Weight

kg.

Please enter value between 10.0 and 500.0 ( one decimal ).

Height

Weight

Calculate BMI

Use this calculator to check your body mass index (BMI), which can be a helpful tool in determining your weight category. Or, use it to calculate your child’s BMI.

Your Body Mass Index (BMI) is

Based on your input, your BMI is in the category

You

Underweight

Healthy

Overweight

Obese

For your height, a healthy weight would be between kilograms

For your height, a healthy weight would be between

BMI Calculator for Girls & Boys

BMI Calculator

Metric Imperial

Select gender

Boy Girl

Age

yr.

mth.

Please enter value between 0 and 19 years.

Height

cm.

Please enter value between 40 and 225.

Weight

kg.

Please enter value between 10.0 and 250.0 ( one decimal ).

Height

Weight

Calculate BMI

Use this calculator to check your body mass index (BMI), which can be a helpful tool in determining your weight category. Or, use it to calculate your child’s BMI.

Based on your inputs your child's BMI is:

1

99