>how many people have lived and died altogether on this world until now?
The most widely accepted scientific estimate for the total number of humans (Homo sapiens) who have ever lived on Earth comes from the Population Reference Bureau (PRB), a respected demographic research organization. Their latest detailed calculation (updated around 2022 with projections) puts the cumulative number of people ever born at approximately 117 billion as of that period.This figure is a cumulative total of births since the emergence of anatomically modern humans (often dated ~200,000–300,000 years ago). It accounts for:Very small prehistoric populations for most of human history
Gradual growth after the agricultural revolution (~10,000 BCE)
Much faster growth in recent centuries, especially post-Industrial Revolution
Key Breakdown (based on PRB methodology)Total humans ever born ≈ 117 billion (this includes everyone who has ever lived up to the reference point).
Currently alive (as of March 2026) ≈ 8.28–8.30 billion (live estimates from sources like Worldometer and UN-based projections place the world population right around 8.3 billion in early 2026).
Implication: Roughly 7% of all humans who have ever existed are alive right now.
How Many Have Died?Subtracting the living from the total ever born gives the number who have lived and died:≈ 117 billion – 8.3 billion = ~108.7 billion people have lived and died.This is the closest answer to "how many people have lived and died altogether" — around 109 billion (with slight rounding and minor year-to-year updates).Important CaveatsThese are estimates, not exact counts — they rely on assumptions about ancient birth rates, population sizes, infant mortality, and when to start the "human" clock (e.g., 50,000 BCE vs. 200,000 BCE changes the number by only a few billion due to tiny early populations).
Different sources vary slightly: older estimates hovered around 100–110 billion, some more conservative ones are lower (80–100 billion), but 117 billion total ever born (with ~109 billion dead) is the most commonly cited recent figure from demographers.
The number grows by roughly 130–140 million per year (current annual births), so the total ever born increases steadily while the "have died" figure grows by annual deaths (~60–70 million).
In short: Roughly 109 billion people have lived and died on Earth up to now, with about 8.3 billion still living — meaning the dead outnumber the living by about 13 to 1. This striking ratio highlights how recent and rapid the explosion of human population really is in the grand sweep of our species' history.