UUID Generator

Random version 4 UUIDs, one at a time or in bulk — generated securely in your browser.

FREE TOOL · SECURE RANDOM · NO SIGN-UP

Version 4 UUIDs are random 122-bit identifiers — the chance of two matching is effectively zero.

How to Use This Tool

  1. 1.Pick how many you need. One for a single record, or 5, 10 or 50 for a batch import.
  2. 2.Click “Generate UUIDs”. Fresh random version 4 UUIDs appear instantly.
  3. 3.Toggle the format. UPPERCASE for systems that expect capital hex, or no-hyphens for compact 32-character IDs.
  4. 4.Copy all in one click. The whole list goes to your clipboard, one UUID per line.
  5. 5.Paste wherever you need them. Database keys, file names, test data, API identifiers — anywhere a unique ID belongs.

❓ FAQ

What is a UUID?

A UUID (Universally Unique Identifier) is a 128-bit label written as 32 hexadecimal digits in five groups, like 550e8400-e29b-41d4-a716-446655440000. It identifies a record, file or object without a central registry.

Is a UUID the same as a GUID?

Practically yes. GUID is Microsoft's name for the same 128-bit format; a version 4 UUID and a version 4 GUID are interchangeable.

Are these UUIDs really unique?

Version 4 UUIDs use 122 random bits, so the chance of two ever matching is about 1 in 5 billion billion billion — effectively zero for everyday use.

Is this UUID generator free?

Yes — 100% free, no sign-up. UUIDs are generated in your browser with the built-in secure random generator; nothing is uploaded.

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