UUID Generator
To generate UUIDs, choose version 4 (random) or version 7 (time-ordered) and how many you need, up to 1,000. They are created with your browser's cryptographically secure random number generator and follow RFC 9562.
- Free
- No signup
- Runs in your browser
How to use UUID Generator
- 1Type or paste your input into the UUID Generator.
- 2Choose any options you need.
- 3See the result update instantly.
- 4Copy the result or download it.
UUID Generator: questions people ask
v4 or v7: which should I use?
v7 starts with a timestamp, so new IDs sort in creation order, which keeps database indexes efficient. v4 is fully random.
Can two UUIDs collide?
With 122 random bits in v4, you would need to generate about 2.7 quintillion to have a 50% chance of a single duplicate.
Is my data uploaded when I use the UUID Generator?
No. The UUID Generator runs entirely in your web browser, so your text and numbers stay on your device and work even on a slow connection.
Does the UUID Generator work on iPhone, Android and Mac?
Yes. The UUID Generator runs in any modern browser (Safari, Chrome, Edge or Firefox) on iPhone, iPad, Android phones, Mac, Windows and Chromebook. There is no app to install.
Is the UUID Generator free?
Yes. The UUID Generator is free with no signup, no watermark and no daily limit.