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UUID Generator

Generate cryptographically random UUID v4 values locally.

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About the UUID Generator

The UUID Generator creates version 4 UUIDs: 128-bit identifiers written as 36 characters, such as 3f2b8c1e-9d4a-4e7b-8f2c-1a6d5e9b0c47. They are generated from cryptographically secure randomness, so duplicates are practically impossible.

Generate between 1 and 100 at a time. Everything runs in your browser with JavaScript. Nothing you type is uploaded to our server, so it is safe to use with private data.

How to use it

  1. Enter how many UUIDs you need (1–100).
  2. Select Generate UUIDs.
  3. Copy the list, one UUID per line.

Common uses

  • Creating primary keys and record IDs.
  • Filling test fixtures and sample data.
  • Naming files or resources that must not collide.

Tips

  • UUIDs are unique, not secret; do not use them as passwords or access tokens.
  • Version 4 UUIDs are random, so they do not sort by creation time.