There is no agreement on the date of his reign.
Some authors say it was between 2558 BC and 2532 BC.
While the Turin King List length for his reign is blank, and Manetho exaggerates his reign as 66 years, most scholars believe it was between 24 and 26 years, based upon the date of the Will of Prince Nekure which was carved on the walls of this Prince's mastaba tomb.
The will is dated anonymously to the Year of the 12th Count and is assumed to belong to Khufu since Nekure was his son.
Khafra's highest year date is the "Year of the 13th occurrence" which is a painted date on the back of a  casing stone belonging to mastaba G 7650.
This would imply a reign of 24–25 years for this king if the cattle count was biannual during the Fourth Dynasty.
There is no agreement on the date of his reign. Some authors say it was between 2558 BC and 2532 BC. While the Turin King List length for his reign is blank, and Manetho exaggerates his reign as 66 years, most scholars believe it was between 24 and 26 years, based upon the date of the Will of Prince Nekure which was carved on the walls of this Prince's mastaba tomb. The will is dated anonymously to the Year of the 12th Count and is assumed to belong to Khufu since Nekure was his son. Khafra's highest year date is the "Year of the 13th occurrence" which is a painted date on the back of a  casing stone belonging to mastaba G 7650. This would imply a reign of 24–25 years for this king if the cattle count was biannual during the Fourth Dynasty.
Khafra