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UUID generator

Generate cryptographically random UUID v4 identifiers in bulk, with uppercase and hyphen formatting options.

Input & settings

01
Configure tool input
Processed in your browser. Your input is never uploaded or saved.

Result

02

Ready when you are

Set up your input and run the tool. Your result will appear right here.

Private · Instant · Local

GUIDE & CONTEXT

About this tool

UUID v4 is a 128-bit identifier with 122 random bits after the version and variant fields are set. It is useful when independent systems need to create identifiers without a central counter. Formatting changes do not change the underlying identifier.

How to use it

  1. Set how many UUIDs to generate.
  2. Choose lowercase or uppercase and whether to keep the standard hyphens.
  3. Generate a new batch and copy the identifiers.
Example

Standard form: 550e8400-e29b-41d4-a716-446655440000. The first character of the third group is 4 for UUID v4.

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