Life Expectancy 2024 By Country. United nations projections are also included through the year 2100. Period life expectancy is a metric that summarizes death rates across all age groups in one particular year.

Estimates are expressed as the expected age at death, not as years left to live. Life expectancy at birth compares the average number of years to be lived by a group of people born in the same year, if mortality at each age remains constant in the future.