Time for the world population to double
The number of years taken for the world population to double across different stages of history. Labels show the change in the population level: for example, the yearstaken to go from 0.25 to 0.5 billion; then 0.5 to 1 billion.
All our related research and data
Charts
- Annual population growthwith UN projections
- Birth rate vs. death rate
- Births and deaths per yearwith UN projections
- Births per yearwith UN projections
- Births per year, by world region
- Child deaths per year
- Children per woman vs. Natural population growth
- Children under age 15, by world region1950 to 2100, with UN projections
- Children under age 5
- Children under age 5, by world regionwith UN projections
- Deaths per yearwith UN projections
- Deaths per year, by age group
- Deaths per year, by world region
- Fertility rate: children per womanwith UN projections
- Natural population growthwith UN projections
- Natural population growth rate vs. child mortality rate
- Natural population growth rate vs. median age
- Population10,000 BCE to 2100, with UN projections
- Populationsince 10,000 BCE, Marimekko
- Populationsince 10,000 BCE
- Population1950 to 2100, with UN projections
- Population by age group1950 to 2100, with UN projections
- Population by age group
- Population by world region10,000 BCE to 2100, with UN projections
- Population growth ratewith UN projections
- Population growth rate by level of developmentwith UN projections
- Population growth rate with and without migration
- Population of young, working-age and elderly
- Population of young, working-age and elderlywith UN projections
- Population, comparison of United Nations projections1950 to 2100, with UN projections
- Share of births registered
- The demographic transition
- World population, comparison of UN projections
- World population, comparison of different historical sources