UUID / GUID Generator
Generate version 4 UUIDs (random) directly in your browser using cryptographically secure randomness. Configure how many IDs you need and how they should be formatted.
- Generate UUID v4 values instantly.
- Bulk-generate and copy lists of UUIDs.
- Handy for IDs in tests and databases.
- Share results: Generate a secure link to share your current input and results with teammates — nothing is uploaded to any server.
Generation options
UUID v5 namespace/name options
UUID v5 is deterministic. The same namespace and name produce the same UUID; do not use it when unpredictability is required.
Uses browser cryptographic randomness for UUID v4 and UUID v7 random fields. If secure randomness is unavailable, generation is blocked.
Validate / Decode
Paste a UUID, GUID, URN, no-hyphen value, quoted value, or a list. Validation and normalization run locally.
Bulk / Export
Version Guide
| Need | Recommended |
|---|---|
| General random public ID or hard-to-guess external resource ID | UUID v4 |
| Database primary key with insertion locality or time-ordered event ID | UUID v7 |
| Deterministic ID from namespace + name | UUID v5 |
| Placeholder empty value | Nil UUID |
| Microsoft/.NET/SQL Server display style | GUID format with uppercase/braces as needed |
| Short URL-safe random ID | Password & Token Generator |
UUID v4 has 122 random bits and negligible collision risk for normal application usage. UUID v7 is sortable but exposes approximate creation time. UUID v5 is deterministic, not random. GUID is commonly Microsoft terminology for UUID-like identifiers.
Snippets
Next Steps
Generate or validate UUIDs, then send the list to CSV, SQL, comparison, timestamp, or cleanup tools.