UUID Generator
Generate as many version 4 UUIDs as you need, in uppercase or with the hyphens stripped out.
Press the button and your UUIDs will appear here.
How to use
Set how many you want and press the button. You can make up to 100 at a time and copy the whole list in one go.
Version 4 UUIDs are built from random bits, so two machines can mint them independently without coordinating and still never collide. That makes them a good fit for database primary keys, file names, and request trace IDs.
Some databases and systems expect the value without hyphens, or stored in uppercase. The two checkboxes let you match whatever format the receiving side wants.
The values come from your browser cryptographic random number generator. Nothing is requested from a server and nothing is sent to one.