How to Use UUID / GUID Generator (v4)
- Step 1
Select quantity (1 to 50 UUIDs).
- Step 2
Choose formatting options (Uppercase and Include Hyphens toggles).
- Step 3
Click Regenerate or Copy All to copy generated UUIDs to your clipboard.
Why Use CalcSuiteHub UUID / GUID Generator (v4)?
Cryptographically Secure Random Generation (Web Crypto API)
Bulk Quantity Generation (Up to 50 at once)
Uppercase & Hyphen formatting toggles
100% Free & In-Browser Execution
Frequently Asked Questions (FAQ)
What is a Version 4 UUID?
A v4 UUID is a 128-bit Universally Unique Identifier generated using cryptographically strong pseudo-random numbers specified by RFC 4122.
What is the collision probability of v4 UUIDs?
The probability of generating two identical v4 UUIDs is practically zero (1 in 2¹²² or 5.3 × 10³⁶), making them safe for primary database keys and distributed systems.