This map shows the total years of life expected to be lived by the current population, based on the life expectancy of children born in 2002. Life expectancy is calculated on the assumption that prevailing trends will continue. It is usually different for men and women. As you get older your whole life expectancy increases from that at your birth because you have survived so far.
The longest life expectancy at birth is in Japan, at 81 years 6 months. The shortest life expectancy is in Zambia, at 32 years 8 months. The world average life expectancy is 67 years.