UUID Generator
Generate cryptographically random version 4 UUIDs, one or a thousand at a time.
How to use the uuid generator
- Choose how many UUIDs you need.
- Set uppercase or no-hyphen options if needed.
- Click Generate, then Copy.
Frequently asked questions
What is a UUID?
A UUID (universally unique identifier, also called GUID) is a 128-bit value written as 36 characters, like 3f2b8c1e-9d4a-4f6b-8e2a-1c5d7e9f0a3b. It is used as a unique ID for database rows, files and API objects.
Can two UUIDs ever be the same?
Version 4 UUIDs have 122 random bits. The chance of a collision is so small that you would need to generate billions per second for many years to expect one.
Are these UUIDs secure?
They are created with your browser cryptographic random number generator (crypto.randomUUID), the same source used for security keys.
How many can I generate at once?
Up to 1,000 per click.
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