Data Center | 22. Januar 2014 | Dieter Schmitz Freeware SID2Username ToolSID2Username is a tiny tool for determining textual the SID from a given username and vice versa. With its implemented features to monitor the clipboard and automatically translate the input, it is extremely helpful for administrators.SID2Username converts user names to textual SIDs and vice versa. Resolved user names are displayed as <domain>\\<username> and textual SIDs appear in the well-known <S-1-2-3-4567890> format. The corresponding information can be obtained for local users and users belonging to the currently logged on domain.