UUID / GUID Generator
Generate random version 4 UUIDs in bulk, with formatting options.
Generators Runs in your browser
What is a UUID?
A UUID generator creates universally unique identifiers. NMSnabbit generates random version 4 UUIDs from the browser cryptographically secure random source — each has 122 random bits, making collisions astronomically unlikely. Generate many at once and format them as uppercase, with braces, or without hyphens, all privately in your browser.
How to use the UUID Generator
- 1 Choose how many UUIDs you need.
- 2 Pick formatting: uppercase, braces, or remove hyphens.
- 3 Click Generate to create cryptographically random version 4 UUIDs.
- 4 Copy one or all of them.
What you can use it for
- Creating primary keys for database rows.
- Generating unique IDs for API objects or events.
- Seeding test data.
- Producing correlation IDs for logs.
Frequently asked questions
What UUID version is generated?
Version 4 UUIDs, which are randomly generated using the browser cryptographically secure random source via crypto.randomUUID().
Are these UUIDs unique?
Version 4 UUIDs have 122 random bits, making accidental collisions astronomically unlikely — safe as identifiers in databases and code.
Can I generate many at once?
Yes. Set the count to create dozens of UUIDs in one click and copy them all together.
Is generation private?
Yes. UUIDs are generated locally in your browser; nothing is requested from or sent to a server.
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