A wellhead impression tool includes an elongate central body having opposing upper and lower ends, and defining an inner chamber, an impression sleeve arranged concentric with the central body and made of a malleable material, and a hydraulic assembly extending between the impression sleeve and the central body and in fluid communication with the inner chamber to receive a hydraulic fluid from the inner chamber. The hydraulic assembly is operable to force the impression sleeve radially outward and into engagement with a bowl of a wellhead spool of a wellhead assembly, and forcing the impression sleeve against the bowl results in a physical impression of the bowl on an outer surface of the impression sleeve.