Compare GUID and UUID naming, formats, versions, and common use cases.
GUID and UUID usually refer to the same 128-bit identifier format. UUID is the standards term; GUID is common in Microsoft tools and databases.
Common in .NET, SQL Server, Windows APIs, and Azure docs.
Common in RFCs, JavaScript packages, databases, and API docs.
Use UUID v4 for random IDs. Use UUID v7 when new IDs should sort roughly by creation time.
The main GUID Generator creates UUID v4 or v7 values with bulk output, validation, uppercase, braces, and compact formatting.
Open GUID Generator