UUID Generator
Generate UUID v1, v4, and bulk unique IDs instantly in your browser. Free GUID generator, 100% private — no data uploaded.
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Click "Generate" to create UUIDs
Features
100% Browser-Based
All UUIDs are generated in your browser. Your data never leaves your device.
Free & No Sign Up
No registration, no limits, no hidden fees.
Instant Results
Generate UUIDs in real time — zero waiting.
Bulk Generation
Generate up to 100 UUIDs at once in v1 or v4 format, ready to copy as a list.
Frequently Asked Questions
Is my data sent to any server?
No. All UUIDs are generated entirely in your browser using the Web Crypto API. No data is ever sent to any server.
What is the difference between UUID v1 and v4?
UUID v1 is based on the current timestamp and MAC address, making it time-sortable. UUID v4 is generated using random numbers, providing better anonymity. Most modern applications use v4.
Are the generated UUIDs truly unique?
UUID v4 provides 122 bits of randomness, making the probability of a collision astronomically low — roughly 1 in 2.7 x 10^18. For all practical purposes, they are unique.
Can I generate multiple UUIDs at once?
Yes. Our bulk generation feature lets you create up to 100 UUIDs at once, which you can then copy to your clipboard for use in databases, scripts, or other applications.