UUID Generator

Create unique IDs in milliseconds. Generate cryptographically secure UUIDs locally—fast and collision-free.

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Generate a UUID

Click the button to generate a new UUID

What is UUID v4? A universally unique identifier used for database keys or session IDs.

Free UUID Generator Online - Generate Unique IDs Instantly

Generate cryptographically secure UUID v4 (Universally Unique Identifiers) instantly with our free online generator. Create random 128-bit identifiers for database primary keys, session IDs, API tokens, and file names. History tracking keeps record of generated UUIDs. All generation happens locally using secure browser APIs—no server communication required.

1When to use this tool?

💡Needing a primary key for a database

💡Generating unique temporary filenames

💡Issuing user session IDs

2Features

Generates standard UUID v4
One-click copy
History of generated UUIDs
Cryptographically secure randomness

3How to Use

Click the 'Generate New UUID' button.
A new unique ID will appear instantly.
Click the copy icon to copy it to your clipboard.

FAQ

Q. Is it truly unique?

A. While not theoretically impossible, the probability of a collision is so astronomically low that it is effectively unique for all practical purposes.