Why Use Our Free Online UUID Generator?

✅ Instant uuid generation (uuid4, uuid v1, uuid v5)
✅ Works across JavaScript, Python, Node.js, Java, C#, Golang
✅ Supports random uuid, guid, and universal unique identifier generation
✅ No installation required – generate uuid online easily
✅ Uses secure Web Crypto API for randomness (uuid4)
FAQ about UUIDs and GUIDs
What is a uuid? A universally unique identifier (UUID) is a 128-bit string that helps identify information uniquely without coordination.
What is a guid? GUID (Globally Unique Identifier) is Microsoft's term for UUID; functionally, they are the same.
How do I generate uuid online? Use this tool to instantly get uuid4, uuid v1 or uuid v5 online, copy and use anywhere.
Is uuid secure? UUID v4 is based on random numbers, using secure crypto sources; uuid v1 uses timestamp + MAC, so avoid exposing sensitive info.
Can I use uuid in databases? Yes! PostgreSQL uuid, Java uuid, Node js uuid, and more are widely used as primary keys.