UUID Generator (v4)
Generate random version-4 UUIDs in your browser — one or a hundred at a time, ready to copy. Cryptographically random, and nothing is ever sent to a server.
Random version-4 UUIDs, generated on your device.
How to use it
- 1Set how many
Choose how many UUIDs you need (1–100).
- 2Generate
Click Generate to produce a fresh batch of random v4 UUIDs.
- 3Copy
Copy a single id, or copy the whole list with one click.
What is a UUID?
A UUID (universally unique identifier), also called a GUID, is a 128-bit value used to label things uniquely without a central authority. Version-4 UUIDs are random, which makes accidental collisions astronomically unlikely.
Truly random, locally
Each id comes from your browser’s cryptographically secure random generator (crypto.randomUUID). Generate a batch, copy them all, and paste straight into your code or database.
Frequently asked questions
Are the UUIDs generated on a server?
No. They’re generated in your browser with a secure random source; nothing is uploaded.
Are these safe to use as unique keys?
Yes. Version-4 UUIDs are random 128-bit values; the chance of a collision is negligible for virtually any application.
What version are they?
Version 4 (random). They look like xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx.
How many can I generate at once?
Up to 100 per batch — generate again for more.
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