Global Fertility Transition Demographic Bust Simulator

Current Year TFR 2.05 Replacement Level: 2.10
2.1 Replacement Cross 2021 Crossed below 2.10
Peak Population 2062 1.68 Billion
Aged Dependency Ratio 18.4% Ratio (65+) / (15-64)
Workforce Proportion 67.2% Ages 15–64 Year Cohort
2026 Below Replacement (TFR 2.05)

Age-Cohort Pyramid

Distribution by 5-Year Age Groups
■ Male ■ Female

Fertility & Population Trajectory

1950 – 2100 Timeline Projection
— Total Fertility Rate (TFR) --- Population Size --- 2.10 Benchmark
The Global Demographic Shift: As highlighted in recent analysis of India's rapid fertility decline, fertility rates (TFR) are falling below replacement level (2.1) far earlier in economic development cycles than in 20th-century Western transitions. Higher female education, rapid urban migration, and delayed marriage drive steep contractions in youth cohorts, ultimately leading to shrinking workforces and escalating aged dependency ratios across both developing and developed economies.
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