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ToolMint

UUID Generator

New

Generate RFC 4122 compliant version 4 UUIDs in bulk. Uses window.crypto.randomUUID for cryptographically strong randomness.

Last updated June 2025 2 min read Works in browser Privacy first
Uppercase
No UUIDs yet
Steps

How to use

  1. Choose how many UUIDs you want (1–100).
  2. Click Generate.
  3. Copy one or all at once.
Why you’ll love it

Benefits

Free forever

No trials, no paywalls, no ads inside the tool.

Zero friction

No sign up, no email, no cookies you didn’t ask for.

Fast by design

Interactions render in under 200ms on modern devices.

In practice

Examples

  • Bootstrap seed data with 20 UUIDs.
  • Generate a single UUID for a new database row.
Tips

Pro tips

  • v4 UUIDs use 122 bits of randomness — collisions are practically impossible.
Watch out

Common mistakes to avoid

  • Storing UUIDs as strings when your DB supports a native UUID type.

Frequently asked questions

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