UUID Generator
Generate random v4 UUIDs individually or in bulk instantly.
About UUID Generator
Generate random v4 UUIDs online instantly. Create single or bulk UUIDs with formatting options. This tool operates completely in your web browser. No text inputs are ever sent to remote servers or stored in any database, ensuring 100% data privacy for code, API payloads, or confidential documents.
Client-Side Privacy Guarantee
All text transformations run inside your browser tab. Zero server logging or tracking.
100% Private & Offline Capable
Executes locally via JavaScript. Your text never leaves your device.
Instant Real-Time Results
No network latency or server waits. See outputs instantly as you type.
Frequently Asked Questions
What is a version 4 (v4) UUID?
A v4 UUID (Universally Unique Identifier) is a 128-bit identifier generated using random numbers according to RFC 4122. It is represented as 32 hexadecimal characters grouped as 8-4-4-4-12.
What is the probability of a UUID collision?
The collision probability is so negligible (roughly 1 in 2.7 quintillion UUIDs to reach a 50% probability of collision) that duplicates are practically impossible in software architectures.
Can I generate UUIDs in bulk?
Yes. You can generate single UUIDs or batch generate up to hundreds of UUIDs at once, with options for uppercase or lowercase formatting.