Free UUID Generator
Generate secure random UUID v4 identifiers — one or a hundred at a time. Perfect for database keys, API testing and session tokens.
Press Generate…
How to use
- Choose how many UUIDs you need (up to 500).
- Pick formatting options — uppercase, braces, with/without hyphens.
- Click Generate, then Copy all to paste into your code or database.
Frequently asked questions
What is a UUID?
A 128-bit Universally Unique Identifier — a 36-character string like f47ac10b-58cc-4372-a567-0e02b2c3d479, practically guaranteed unique.
What is UUID v4?
Version 4 uses 122 random bits — the most common type for IDs, keys and tokens.
Are these cryptographically secure?
Yes — generated with the browser's Web Crypto API.
Is the UUID generator free?
Yes — unlimited, no signup.