Formula calculate HDI

Life expectancy index=average life expectancy of the nation-low life   expectancy of the world

Highest life expectancy of the world-Lowest life expectancy of the world

2. Educational index=average educational enrollment of the  nation                                                               15 +     Average educational targeted of the targeted nation

                    18

                       2

3.Income index= Per capita income of the concerned nation + Lowest per capita income of the world

Highest per capita income of the world-Lowest per capita income of world

4 Human development index(HDI)

HDI= value(A)+value(B)+value(C)