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How many generations of humans have there been on Earth?

For 300,000 years, Homo sapiens have roamed the Earth, outlasting ice ages and migrating across continents. While written genealogy stretches back thousands of

Akhyari Hananto

June 2, 2026 6:50 AM GMT+7

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Data Sources

PLOS Biology

For 300,000 years, Homo sapiens have roamed the Earth, outlasting ice ages and migrating across continents. While written genealogy stretches back thousands of years, our biological history is significantly deeper, rooted in an era long before the first cities were built.

Calculating the exact number of generations requires understanding the "generation interval"—the average age of reproduction. By analyzing genetic data and historical records, scientists can now estimate the vast chain of ancestors that connects modern humans to our ancient origins.

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