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UUID Generator

Bulk-generate v4 UUIDs.

v4 is fully random — the general-purpose default.

Über UUID Generator

UUIDs are 128-bit unique identifiers used as database keys and distributed IDs. Version 4 UUIDs are random-based strings defined by RFC 4122. toco.tools generates batches of v4 UUIDs with optional uppercase, lowercase, and dashless formatting—ready to copy. Randomness relies on the browser CSPRNG. Collisions are extremely unlikely; choose other UUID versions if your policy requires time-ordering.

So funktioniert's

  1. Set how many UUIDs
  2. Pick format options
  3. Copy generated UUIDs

FAQ

What is a UUID generator?

A tool that creates random RFC 4122 version 4 UUID strings.

Are UUIDs sent to a server?

No. Generation runs entirely in your browser.

How many UUIDs can I generate at once?

Up to the tool limit; very large batches may slow the browser.