Storberget is admitted as a lawyer and jurist. He is married and has three children.
Storberget was first elected in 2001 to the Storting, his constituency is Hedmark. Since October 17, 2005 Knut Storberget was Minister of Justice and Police in the second cabinet of Jens Stoltenberg. On 11 November 2011, he assumed the political responsibility for failures of the security forces in connection with the terrorist attacks of 22 July 2011. He resigned from his post without his personal misconduct would have been attested. During the term 2013/17 he worked as a deputy in the Economic Committee.