Developer tool

UUID v4 generator

Create one or more RFC 4122 version 4 UUIDs with formatting options for lowercase or uppercase output, separators, braces, copying, and download. Generation happens in the browser.

Open the UUID generatorAll tool guides

UUID formatting changes how a value is displayed; it does not change the identifier’s underlying version and variant bits.

How to generate UUIDs

  1. Choose a quantity. Set how many UUIDs to create in one run.
  2. Choose formatting. Select case, separator, and optional braces to match the system that will consume the values.
  3. Generate and export. Review the list, then copy it or download the output.

UUID generator features

  • RFC 4122 version 4 UUID output.
  • Generate one to 100 values per batch.
  • Lowercase or uppercase formatting.
  • Configurable separator and optional braces.
  • Generated and unique count details.
  • Copy and download actions.

UUID FAQ

Common questions

What is a UUID v4?

A UUID version 4 is a randomly generated universally unique identifier format. Aegis labels its output as RFC 4122 version 4.

Can I generate UUIDs in bulk?

Yes. The tool can generate a batch of one to 100 UUIDs and reports the generated and unique counts.

Can I add braces or change case?

Yes. Choose lowercase or uppercase output, a separator, and optional braces in the interactive tool.

Are UUIDs sent to a server?

UUID generation runs in the browser and does not need a server request.

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