UUID Generator

Generate Universally Unique Identifiers (UUIDs) in multiple versions and formats.

UUID Version

Format Options

Uppercase

Convert letters to uppercase

Remove Dashes

32-character hex string

Add Braces

Wrap in curly braces

Count5

1100

Format Examples

Standard:550e8400-e29b-41d4-a716-446655440000

Uppercase:550E8400-E29B-41D4-A716-446655440000

No Dashes:550e8400e29b41d4a716446655440000

With Braces:{550e8400-e29b-41d4-a716-446655440000}

About UUIDs

Version 1 (Timestamp): Generated from current timestamp and node ID. Useful when you need time-ordering or want to know when a UUID was created.

Version 4 (Random): Randomly generated using cryptographically strong random number generator. Most commonly used version. Safe for all general purposes.

NIL UUID: Special UUID consisting of all zeros (00000000-0000-0000-0000-000000000000). Used as a placeholder or to represent null.

MAX UUID: Special UUID consisting of all Fs (ffffffff-ffff-ffff-ffff-ffffffffffff). Useful for testing or as a boundary value.