UUID Generator
Generate v4 UUIDs in bulk.
Overview
Generates UUIDs, the long unique identifiers used as database keys, request IDs, and anywhere you need a value that will not collide with another. It produces version 4 (random) UUIDs in your browser.
How it works
A UUID is a 128-bit identifier, shown as 32 hexadecimal digits in five hyphen-separated groups. A version 4 UUID fills almost all of those bits with random data, which makes the chance of two generators ever producing the same value vanishingly small, so you do not need a central authority to hand out IDs. The values are generated locally on your device.
How to use it
- Generate a UUID.
- Copy the value.
- Use it as a key, identifier, or token in your application.
- Generate more as needed.
Examples
Format
A version 4 UUID looks like 3f2504e0-4f89-41d3-9a0c-0305e82c3301.
Use as a key
Assign one to a new record so it has a unique identifier that does not depend on a database sequence.
FAQ
What is a UUID?
Will two UUIDs ever clash?
What is version 4?
Are UUIDs secret or secure?
Is anything sent to a server?
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Open toolEmbed this tool
Paste this snippet to put the tool on your own site. It runs entirely in the visitor's browser, the same as it does here.