UUID Generator Guide
1
Enter how many you need (1-100), pick case, and whether to include hyphens or braces
2
Click "Generate UUID" — results appear below, one per line
3
Click "Copy" on any row to grab one, or "Copy all" to take them all at once
✅Where UUIDs are used
- Database keys: collision-free unique IDs in distributed systems
- APIs & messaging: request tracing, idempotency keys, deduplication
- Files & resources: naming uploads, sessions or device identifiers
💡Tips
- v4 UUIDs are fully random — no time or MAC, so they leak no generation info
- The brace form (e.g. {xxxx...}) is common in Windows/COM contexts
- For DB storage, the 32-char hyphen-free form saves space
A UUID (universally unique identifier, also called GUID) is a 128-bit identifier, usually written in the 8-4-4-4-12 hex form. The v4 version is generated from random numbers with an extremely low collision chance, ideal for creating unique IDs without central coordination.
🔒 Generated locally with the browser-native crypto.randomUUID(), nothing is uploaded; supports bulk, case, hyphen and brace formats and one-click copy — no install, no signup.