UUID Generator
Free UUID generator online. GUID generator, random UUID generator and UUID v4 generator to create unique identifiers instantly.
How it works
- 1
Select the mode
Choose whether to generate a single UUID or multiple UUIDs in bulk, up to 100 at a time.
- 2
Configure the format
Enable the uppercase option if you want the UUID in uppercase letters instead of the standard lowercase format.
- 3
Generate and copy the UUIDs
Click Generate: each UUID v4 is created with the browser's cryptographic generator, ready to copy with one click.
FAQ
What is a UUID?
UUID (Universally Unique Identifier) is a 128-bit identifier used in programming to create unique IDs without centralized coordination. Version 4 is randomly generated.
Can a UUID be duplicated?
In theory yes, in practice no. The collision probability is about 1 in 2^122, which is practically impossible.
What is a UUID used for?
To identify database records, user sessions, files, transactions and anything that needs a unique ID without a centralized counter.
