What kind of UUIDs are these?

Version 4 UUIDs, generated with the browser's cryptographically secure random number generator (crypto.randomUUID).

UUID v4 has 122 random bits, so collisions are astronomically unlikely — safe as primary keys and identifiers.

Can I generate many at once?

Yes — choose a count and generate up to 100 at a time, then copy them all.

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UUID Generator

The UUID Generator creates random version-4 UUIDs (also called GUIDs) using the browser's cryptographically secure random source. UUIDs are 128-bit identifiers used as database keys, request IDs and idempotency keys precisely because they can be generated independently without collisions.

Why use UUID Generator

Cryptographically random UUID v4 via crypto.randomUUID().
Generate in bulk — up to 100 at once.
Uppercase and hyphen-free options for different systems.
Copy all with one click.

How to use UUID Generator

1Choose how many. Set the count and any formatting options (uppercase, hyphens).
2Generate. Click Generate for a fresh batch of random UUIDs.
3Copy. Copy a single UUID or the whole list.

Frequently asked questions

What kind of UUIDs are these?: Version 4 UUIDs, generated with the browser's cryptographically secure random number generator (crypto.randomUUID).
Are they unique?: UUID v4 has 122 random bits, so collisions are astronomically unlikely — safe as primary keys and identifiers.
Can I generate many at once?: Yes — choose a count and generate up to 100 at a time, then copy them all.

Developer notes

UUID v4 is random, so values are unordered — fine for keys but poor for index locality. If you need time-sortable IDs, consider UUID v7 or ULID instead.

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