Script for the BMI body mass index calculator, calculating weight and height.

The "body mass Index BMI" calculator will be useful for sites with the following topics: body health, proper nutrition, healthy lifestyle, sports and physical training, body weight loss, diet and diet food sales. Also, the calculator can be used for personal use when calculating and controlling weight. The BMI calculator does not require an Internet connection and will work locally on your home computer.

Demo: http://mobile-island.narod.ru/_js/calculators/js-calc-imt/calkulyator-indeksa-massy-tela-imt.html

========== Description of the "BMI body mass index Calculator" script»

The "BMI body mass index Calculator" script allows you to calculate BMI depending on height and weight. To calculate BMI, the site user must enter their height and weight in the appropriate fields of the calculator. When entering data, the calculator automatically calculates the body mass index and tells the user what weight range their BMI falls into.

Also, the calculator script calculates the normal weight that a site user should have when they grow. The user will find out how many extra kilos they have, or how many kilos they are missing from the norm.

========== Formula for calculating the "body mass index BMI Calculator" script»

The calculation of body mass index BMI is performed using the formula A. ketle:

BMI = weight, kg / height, m2

where,
weight, kg – the weight of a person in kilograms.
height, m2 – the height of a person in meters raised to the second degree.

Weight classification is performed depending on which BMI range the calculated BMI value falls into, according to the table:

BMI: Less Than 16 Pronounced body mass deficit
BMI: 16-18.5 Underweight
BMI: 18.5-25 Normal body weight
BMI: 25-30 Overweight (pre-fat)
BMI: 30-35 1st degree Obesity
BMI: 35-40 2nd degree Obesity
BMI: More Than 40 Obesity of the 3rd degree