This is a BMI Calculator for all Ages and Gender. This BMI Calculator like any other in the type has option for selecting either the British or the Metric unit of measurement.
You need to select gender first and enter age, height and weight in one of the measurement system and press calculate BMI button.

BMI Graph Analysis for Adults:

Suppose the selected age is > 20 years, the calculator shows a BMI graph for adults with a marking (Red Ball) on it. Observe the red ball on the graph for the background color. Following are the rules of the result.
White background color : under weight;
Yellow background color: normal weight;
Amber background color: over weight;
Red background color : obese.

BMI chart for children and teens (boys):
Suppose the selected age is >= 1 & <=20 years, the calculator shows a BMI graph for Children with a marking(Red Ball) on it. Observe the red ball on the graph for the background color. Following are the rules of the result.
Pink background color : under weight;
Green background color : normal weight;
Amber background color: over weight;
Red background color : obese.
This graph analysis is for boys.

BMI chart for children and teens (girls):
Suppose the selected age is >= 1 & <=20 years, the calculator shows a BMI graph for Children with a marking(Red Ball) on it. Observe the red ball on the graph for the background color. Following are the rules of the result.
Pink background color : under weight;
Green background color : normal weight;
Amber background color: over weight;
Red background color : obese.
This graph analysis is for girls.