UUID Generator

v4 RFC

Generate cryptographically secure UUID v4 identifiers directly in your browser. Fast, private and free.

RFC 4122 v4

Standard UUID

100% Private

Client-side only

Generation parameters

Version, quantity and format

v1
Time-based
v3
MD5 Hash
v5
SHA-1 Hash
1 items

From 1 to 100 in one click

e.g. 4F19B8...

Timestamp header in export files

Quantity
0pcs

in current batch

Format
Standard

36 chars, lower

Security
128-bit

CSPRNG (crypto.randomUUID)

Primary result

Click “Generate UUID” to get a new identifier

What is UUID v4?

UUID version 4 is generated using 122 cryptographically random bits according to RFC 4122. The chance of generating a duplicate is practically zero.

RFC 4122 Standard

Common use cases

  • Primary keys in databases
  • Session IDs and authentication tokens
  • Microservices and distributed systems
  • Unique file names in object storage
128-bit Distributed ID
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