Demographic Simulator

Pick a country to load real-world assumptions, or enter your own starting population. Adjust fertility, mortality and migration to see how demographics evolve.

Assumptions

Loads population, TFR, life expectancy & migration from World Bank data for Japan. You can still adjust any value below.

1.5
80y
80y

Economy

+2.0%

Population (2106)

4.5M

55.4%

Median age

50y

65+ share

30%

Dependency ratio

73%

birthrate.io

Projected population

1.5 TFR · 80y life expectancy · +0 net migration / step · based on Japan

Have a correction, a better estimate, or additional data—at the global, national, regional, or city level? Help improve the data

Age structure
Male4.8M2026Total 10M5.2MFemale
0102030405060708090100+72.5KAge72.5Kbirthrate.io
20262106

GDP / capita (2106)

$146.3K

from $30K

Total GDP (2106)

$651.6B

Real growth

+2.0%/yr

Economy size ×

2.2×

vs. today

birthrate.io

Projected GDP per capita

+2.0% real growth/yr

Have a correction, a better estimate, or additional data—at the global, national, regional, or city level? Help improve the data

birthrate.io

Projected total GDP

GDP per capita × projected population

Have a correction, a better estimate, or additional data—at the global, national, regional, or city level? Help improve the data