UUID Generator - Generate UUID/GUID Online
Generate unique UUIDs (Universally Unique Identifiers) online. Free UUID v1 and v4 generator for developers.
📖 How to Generate UUIDs
- 1
Select the number of UUIDs you want to generate (1-100)
- 2
Choose UUID version: v4 (random) or v1 (timestamp-based)
- 3
Click 'Generate UUIDs' and copy your unique identifiers
❓ FAQ
Q: What is a UUID?
A UUID (Universally Unique Identifier) is a 128-bit number used to uniquely identify information in computer systems. The probability of generating duplicate UUIDs is extremely low.
Q: What's the difference between UUID v1 and v4?
UUID v1 is generated using a timestamp and MAC address, making it sortable by creation time. UUID v4 is completely random, providing better privacy as it doesn't contain system information.
Q: Are UUIDs really unique?
While theoretically duplicate UUIDs are possible, the probability is so low (less than 1 in a billion trillion) that they're considered unique for all practical purposes.
Q: Can I use these UUIDs in production?
Yes! Our UUID generator follows RFC 4122 standards and produces UUIDs suitable for use in databases, APIs, and production applications.