how many people were killed in hiroshima

Around Hiroshima, historians estimate that roughly 140,000 people died by the end of 1945 as a result of the atomic bombing, from the immediate blast, injuries, and radiation effects combined.

Quick Scoop

• Immediate deaths on 6 August 1945 are usually estimated at about 60,000–80,000 people killed outright when the bomb exploded over the city.

• By the end of December 1945, when the acute effects of radiation and injuries are included, Hiroshima’s total deaths are commonly put at about 135,000–140,000 people.

• Later cancer and radiation‑related deaths continued to rise in the following years and decades, so some research uses broader ranges (for example, 90,000–166,000 deaths within the first four months), showing that the exact number can never be known.

Many official Japanese and international sources now cite “around 140,000 deaths by the end of 1945” for Hiroshima, while stressing that this is an estimate, not a precise count.

Information gathered from public forums or data available on the internet and portrayed here.