Former US Federal Reserve chair Alan Greenspan has died aged 100, his family said on Monday.

Greenspan was chief of the Federal Reserve for nearly 19 years from 1987 until 2006, overseeing an economic boom from the final years of the Cold War through to the Dot-com Bubble of 2001.

But critics have argued that his leadership created the conditions for the Global Financial Crisis in 2008.

"He was a giant of a man who helped shape the US economy for decades under presidents of both parties, but was always honest in acknowledging his mistakes," his wife, NBC News correspondent Andrea Mitchell, told the broadcaster in a statement.

"To me, he was my husband, who shaped my life from our very first date in 1984. He had ‘irrational exuberance' for baseball, the Washington Commanders, tennis, golf and music, especially jazz."