UUID / GUID Generator

Generate UUID v4 (random) identifiers. Useful for unique IDs in databases, APIs, and applications.

UUIDs:

 
 
 
  
  
 
 
What is a UUID?
 
UUID (Universally Unique Identifier) or GUID (Globally Unique Identifier) is a 128-bit identifier formatted as 8-4-4-4-12 hex digits (e.g. 550e8400-e29b-41d4-a716-446655440000). UUID v4 is random and practically unique.
 
What is it used for?
 
     
  • Databases: Primary keys for records (no collisions)
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  • APIs: Unique resource IDs
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  • Distributed systems: IDs without central coordination
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  • File names: Unique temporary or generated filenames
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How it works
 
Uses crypto.randomUUID() when available, otherwise a cryptographically random fallback. Generate one or many (up to 50) at once.
 
 
 
 

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