SG UUID Generator
SanchitGurukul
UUID Generator & Inspector
Technology • Education • Innovation
SG Utility● Server-side PHPNo JavaScript • No CDN
Generate UUIDs
Which version should I use? Use v4 for random IDs, v7 when database/index ordering by creation time is useful, and v5 when the same namespace + name must always produce the same identifier. v3 is mainly for legacy interoperability.
Generated Results
Choose a UUID version and generate one or more IDs. Nothing is generated until you submit the form.
Validate & Inspect a UUID
Practical Examples
Database record ID
Use UUID v7 when you want globally unique IDs that also sort roughly by creation time.
API / request identifier
Use UUID v4 when you need an unpredictable random identifier with no embedded timestamp.
Stable resource identifier
Use UUID v5 with the URL or DNS namespace when the same name should always map to the same UUID.
How to Use
Select the UUID version, quantity and output format, then generate. For v3/v5, also choose a namespace and enter the name being identified. Use the inspector when you receive an existing UUID and want to confirm its format, version, variant, or embedded v7 timestamp.
Security note: UUIDs are identifiers, not passwords or access tokens. Even UUID v4 should not be treated as a substitute for authentication or authorization.