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UUID (v4) Generator
Generate random, unique UUID (v4) identifiers with one click; bulk generation supported.
Runs in your browser, no data sent Free · No sign-up required
5
5fc02700-264c-4a36-bea6-38bc70b70d553f9c342c-86a4-4d54-8f2a-4855232f5a9e3fe6a1c5-2576-497b-a13b-4f556d3af18a4960eb86-d17c-4cde-82d8-1b005b59e9da22ebb856-959e-4011-a78b-14de7b2a52f8Create unique identifiers
You need collision-free unique identifiers for database primary keys, file names, session IDs or object identifiers in distributed systems. This tool generates as many UUIDs (v4) as you like with a single click.
All generation happens in your browser using cryptographically secure randomness; no data is sent to any server.
Frequently Asked Questions
A UUID (Universally Unique Identifier) is a 128-bit identifier that is practically guaranteed to be unique (e.g. 550e8400-e29b-41d4-a716-446655440000). It is used to generate collision-free identifiers for database records, files and API objects.
v4 is the fully random version of UUID. This tool uses your browser's cryptographically secure random generator (crypto.randomUUID), so the generated identifiers are both unique and secure.
UUID v4 has 2^122 possible values. The chance of a collision is astronomically low; even if you generate billions of UUIDs, the same one is practically never expected to appear twice.
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