Is the UUID Generator free to use?

Yes, the UUID Generator is completely free. There is no sign-up, no account required, and no limit on how often you can use it.

Are the values from the UUID Generator truly random?

The UUID Generator uses your browser's cryptographically secure random number generator (Web Crypto API), the same standard used for password and security applications.

What devices does the UUID Generator work on?

The UUID Generator works on any device with a modern web browser — desktop, laptop, tablet, or phone. It is mobile-friendly and works offline once the page has loaded.

⚡ Generators

UUID / GUID Generator

Generate UUID v4 (random) and UUID v1 (time-based) identifiers. Bulk generate up to 100. Copy individually or all at once. Free.

The UUID Generator is a free online tool that helps you generate uuid v4 (random) and uuid v1 (time-based) identifiers. bulk generate up to 100. copy individually or all at once. free It runs in your browser with no sign-up, downloads, or installation needed. All processing happens locally — your data stays on your device.

How many

Format

Uses crypto.randomUUID() for cryptographically secure randomness.

How to use

What is a UUID?

A UUID (Universally Unique Identifier) is a 128-bit identifier. Version 4 UUIDs use random numbers. The probability of generating a duplicate is astronomically small — about 1 in 5 undecillion (5×10³⁶). Used as primary keys in databases, session IDs and unique filenames.

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