A UUID (Universally Unique Identifier) is a 128-bit identifier formatted as 8-4-4-4-12 hex digits. Version 4 UUIDs are randomly generated.

Are generated UUIDs truly unique?

Version 4 UUIDs have 122 bits of randomness. The probability of collision is negligibly small for all practical purposes.

What is the difference between UUID and GUID?

GUID is Microsoft implementation of UUID. They are functionally identical and interchangeable.

Yes. Set the quantity field to generate up to 100 UUIDs at once which you can copy as a list.

← Усі інструменти / UUID Generator

Generate high-quality secure, random Version 4 UUIDs (Universally Unique Identifiers) instantly in bulk.

Quantity to Generate: Max 1,000 per request.

Uppercase (e.g. A1B2...)

Wrap in braces `{...}`

Use hyphens `-`

Generated UUID list:

Select the number of unique IDs you wish to generate (from 1 up to 1,000).
Toggle format preferences including capitalization, wrap brackets, and separating hyphens.
Click **Generate UUIDs** — secure, cryptographically random v4 strings are formulated.
**Version 4 Standard**: Each generated string uses cryptographic standard `crypto.getRandomValues()` ensuring maximum entropy and extremely low collision probability.

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