The estimated number of humans who have ever lived on Earth is approximately 117 billion. This figure includes about 109 billion people who have lived and died throughout history plus the roughly 8 billion people alive today
. Key points behind this estimate include:
- Modern Homo sapiens are considered to have appeared around 190,000 to 300,000 years ago.
- Early human populations were very small, possibly as low as 30,000 individuals initially.
- Life expectancy was very low for most of human history, around 10 years at birth, with high infant mortality rates.
- Population growth was slow for most of history until recent centuries.
- Estimates vary slightly, with figures ranging from about 105 billion to 117 billion depending on assumptions and methodologies
In summary, roughly 117 billion people have ever been born on Earth, meaning for every person alive today, about 14 have lived and died before us
