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UUID Generator

Generate random UUIDs (v4) for your applications and databases.

Settings
Output

      
0
Generated
v4
Version
122
Random bits

Overview

Generate UUIDs for unique identifiers (v4).

Best for

  • Create IDs for database records.
  • Tag events in logs.
  • Create IDs for mock data or tests.

Step-by-step

  1. Click generate or choose quantity.
  2. Copy the UUIDs.
  3. Use them as unique keys.

Examples

Example 1
Input
Generate 1
Output
3f2504e0-4f89-11d3-9a0c-0305e82c3301
Standard UUID v4 format.
Example 2
Input
Generate 3
Output
uuid1, uuid2, uuid3
Batch generation in one click.
Example 3
Input
Uppercase + no dashes
Output
3F2504E04F8911D39A0C0305E82C3301
Formatting options change appearance.

Common mistakes

  • UUIDs are not sequential by time.
  • Do not reuse IDs across entities.
  • Removing dashes may break systems expecting standard UUIDs.

Pro tips

  • Generate multiple IDs for batch imports.
  • Store in lowercase for consistency.

FAQ

Are UUIDs cryptographically secure?
v4 is random, but use dedicated crypto tokens for security.
Does this upload my data?
No. Everything runs locally in your browser.
Can I use it offline?
Yes. After the page loads, most tools work offline. Some assets (like fonts) may need a connection.

Data & privacy

All processing happens locally in your browser. No data is uploaded or stored.