This animation by Isao Hashimoto shows the number and spread of nuclear explosions carried out between 1945 and 1998. During that time, there have been 2053 nuclear detonations across the globe.
America conducted 1,054 nuclear explosions, between 1945-92. These tests took place mainly at the Nevada Test Site and the Pacific Proving Grounds in the Marshall Islands. There have been 10 other tests in the US at various locations, including Alaska, Colorado, Mississippi, and New Mexico.
The Soviet Union conducted 715 nuclear tests between 1949 and 1990, mainly at the Semipalatinsk Test Site in Kazakhstan and the Northern Test Site at Novaya Zemlya. Other locations include, Kazakhstan, Ukraine, Uzbekistan, and Turkmenistan.
France conducted 210 nuclear tests between 1960-1996.
Britain has held 45 tests, mainly in Australian territories.
The People’s Republic of China conducted 45 tests.
India conducted 4 tests.
Pakistan conducted 2 tests.
With thanks to Mary E. Allen