How many people died in the Black Death?

How to get close to this number

Work from the share, not the number. The explanation gives the crucial input: a third to a half of Europe's population. Medieval Europe held roughly eighty million people, and the pandemic also reached Asia and North Africa. Applying that fraction to the known population is far more reliable than trying to estimate a medieval death toll directly.

The economic consequence is the part historians care most about, and it is counterintuitive. Losing a third of the workforce made surviving labour scarce and therefore valuable, so wages rose sharply and the bargaining position of peasants improved — which is widely credited with helping end serfdom in western Europe. A catastrophe produced a structural improvement for the survivors.

Medieval demography is reconstructed rather than recorded, so the figure rests on tax rolls, church registers and manorial records that survive unevenly. Estimates have moved substantially as historians revised their view of pre-plague population, and the current figure is a considered reconstruction rather than a count — a point that applies to every pre-modern population statistic.