Using this tool you can translate a Security Identifier (SID) for an Azure AD user or group to an Azure AD Object ID.

• Azure AD SIDs start with S-1-12-1-
• The generated Object ID will correspond to the ObjectId which can be found on users and groups in your Azure AD portal

If you want to find out the SID from an Object ID, you can use Azure AD Object ID to SID Converter instead.