The Fall of Constantinople

35,000

disputed broad estimate

The defending population and garrison were small, but Ottoman force sizes and losses vary sharply by source. Sack deaths and enslavements cannot be reconstructed as exact totals.

Each dot below represents 1,000 human lives. Scroll to watch the scale unfold.

Military Dead

Working allocation: 25,000 soldiers killed in combat, from wounds, or from disease. Each = 1,000 lives.

Ottoman Empire — 18,000 military dead

Byzantine Empire & Allies — 7,000 military dead

Civilian Dead

10,000 civilians killed — from violence, famine, disease, and displacement. Wars are not fought only by soldiers.

Civilian dead — 10,000

Deadliest Engagements

The Final Assault — May 2913,000

incl. 1,000 civilians

Sack of Constantinople8,500

incl. 8,000 civilians

Second Grand Assault6,300

incl. 300 civilians

First Grand Assault4,200

incl. 200 civilians

Night Assault on Sea Walls3,100

incl. 100 civilians

Opening Bombardment2,500

incl. 500 civilians

Mining Operations at Blachernae1,500

Naval Battle off the Bosphorus800

For Perspective

How Fall of Constantinople's dead compare to other conflicts and events.

Fall of Constantinople — working total35,000

Total Byzantine garrison (all defenders)7,000

Ottoman besieging army80,000

Byzantine population in 145350,000

Constantinople population at its peak (c. 500 AD)500,000

Milestones of Loss

7,000 dead

The entire Byzantine garrison consisted of approximately 7,000 men — including Genoese and Venetian volunteers — defending miles of walls against 80,000 Ottoman soldiers. The disparity made the 54-day resistance extraordinary.

10,000 dead

Civilian casualties during the sack are poorly documented. Mehmed halted the looting within hours of entering the city, limiting civilian deaths — but thousands were killed or enslaved in the chaos. The numbers shown are estimates from contemporary chronicles.

Figures are working historical estimates and vary across sources. Labels identify totals that are reported, disputed, or unknown; numerical allocations may be retained for comparison without implying exact knowledge. Each number represents human lives, not false precision.