← Back to Tools

UUID Generator

Generate unique identifiers

Generate universally unique identifiers (UUIDs) instantly with our free online tool. UUIDs are 128-bit numbers used to uniquely identify information in computer systems without central coordination. Version 4 UUIDs are randomly generated, making collisions virtually impossible. Essential for database primary keys, session tokens, distributed systems, and anywhere unique identification is required.

Settings
Generated UUIDs
Click Generate to create UUIDs...

How to Use UUID Generator

  • Set Quantity: Use the slider to select how many UUIDs you need (1-20).
  • Generate: Click "Generate UUIDs" to create unique identifiers instantly.
  • Copy: Click "Copy UUIDs" to copy all generated UUIDs to your clipboard.
  • Use: Paste into your code, database, or configuration files.

Example

Set count to 5 and click Generate. You get five UUIDs like "550e8400-e29b-41d4-a716-446655440000". Each is guaranteed unique and perfect for database records, API keys, or transaction IDs.

Frequently Asked Questions

Q: What is a UUID?
A: UUID (Universally Unique Identifier) is a 128-bit number formatted as 32 hexadecimal digits in 5 groups: 8-4-4-4-12. Version 4 UUIDs are randomly generated with 122 random bits, making duplicates virtually impossible.

Q: Are these UUIDs truly unique?
A: Yes, using crypto.randomUUID() or secure random values. The probability of generating duplicate v4 UUIDs is astronomically low - you'd need to generate billions per second for years to have a 50% chance of one collision.

Related Tools

Password Generator

Generate secure passwords

Random Number Generator

Generate random numbers

Hash Generator

Generate MD5 and SHA hashes

Base64 Encoder

Encode and decode Base64