UUID Generator
Generate UUIDs (v4) instantly. Bulk generation, copy-to-clipboard.
Need API access to UUID Generator?
Integrate this tool into your workflow with our REST API. 3 free requests/day, unlimited with Pro.
What is UUID Generator?
Generate cryptographically secure UUIDs (Universally Unique Identifiers) version 4. Create single or bulk UUIDs, copy to clipboard, and choose your format. No data leaves your browser.
AllKit's UUID Generator is completely free with no signup required. All processing happens directly in your browser — your data is never sent to any server, making it safe for sensitive information.
Why use AllKit?
- No ads, no distractions — a clean interface that lets you focus on the task
- Privacy-first — 100% client-side processing, nothing is uploaded
- Free forever — core tools are free with no usage limits
- API available — integrate into your workflow via our REST API
Frequently Asked Questions
What is a UUID?▾
A UUID (Universally Unique Identifier) is a 128-bit identifier that is guaranteed to be unique across space and time. The v4 variant uses random numbers, making collisions practically impossible.
What's the difference between UUID and GUID?▾
They're the same thing. UUID is the official standard name (RFC 4122), while GUID (Globally Unique Identifier) is Microsoft's term for the same concept.
Are UUIDs truly unique?▾
For practical purposes, yes. The probability of generating two identical v4 UUIDs is approximately 1 in 5.3 × 10^36. You'd need to generate 1 billion UUIDs per second for 85 years to have a 50% chance of a collision.