GEN-03Generators

UUID Generator

UUID v4 for development

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GEN-03Result

Your data never leaves your device: this tool runs locally in the browser.

Instantly generate RFC 4122 version 4 unique identifiers. Handy for test fixtures, database keys and APIs — generate a whole batch at once.

Frequently asked questions

Can two UUIDs collide?

In theory yes, in practice no: the v4 collision probability is vanishingly small (around 10⁻³⁷).

How does v4 differ from v1?

V4 is fully random; v1 derives from timestamp and MAC address. V4 is recommended for most uses.