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Photo: NASA Goddard Space Flight Center/Reto Stöckli

Longevity

Life expectancy at birth in the world was 73.2 years in 2023, by the UN estimate, against 46.4 in 1950.

For women it was 75.9 years, for men 70.5.

Of every 1,000 babies born alive in 2023, 27.3 died before their first birthday. In 1950 it was 138.1.

Life expectancy at birth is a period measure. It sums up the death rates of one year and is not a forecast of how long the babies born that year will live.

Life expectancy at birth, 1950 to 2100Projected from 202402550751001950197520002025205020752100WomenEveryoneMen
2023 Women: 76Men: 71Everyone: 73
Highest life expectancy at birth, 2023
CountryYears
Monaco86.4
San Marino85.7
Hong Kong85.5
Japan84.7
South Korea84.3
Saint Barthélemy84.3
French Polynesia84.1
Andorra84.0
Switzerland84.0
Australia83.9
Lowest life expectancy at birth, 2023
CountryYears
Nigeria54.5
Chad55.1
Lesotho57.4
Central African Republic57.4
South Sudan57.6
Somalia58.8
Mali60.4
Guinea60.7
Benin60.8
Burkina Faso61.1

Sources: World Population Prospects 2024, UN DESA Population Division (CC BY 3.0 IGO).

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Years up to 2023 are UN estimates. Later years are projections, the medium variant unless said otherwise. Methodology