WKIT

UUID Generator

Generate random UUIDs (v4) instantly. Create unique identifiers for your applications.

Generate Unique IDs
Generate UUIDs, ULIDs, NanoIDs, and other unique identifiers

Random UUID (standard)

ID Format Reference

UUID v4

Standard random UUID

550e8400-e29b-41d4-a716-446655440000

ULID

Sortable, 26 chars, Crockford Base32

01ARZ3NDEKTSV4RRFFQ69G5FAV

NanoID

Compact, URL-safe, 21 chars

V1StGXR8_Z5jdHi6B-myT

Short ID

Alphanumeric, 8 chars

xK9mN2pL

About UUIDs

A UUID (Universally Unique Identifier) is a 128-bit identifier that is guaranteed to be unique across all devices and time. The format is: xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx

UUID Format

550e8400-e29b-41d4-a716-446655440000
├─8 chars─┤├─4─┤├─4─┤├─4─┤├───12 chars───┤

Common Uses

  • Database primary keys
  • API resource identifiers
  • Session tokens
  • File names for uploads
  • Distributed system identifiers

Frequently Asked Questions

What is a UUID?

A UUID (Universally Unique Identifier) is a 128-bit identifier that is unique across space and time. UUIDs are commonly used in software to identify database records, API resources, and more.

What version of UUID is generated?

This tool generates UUID v4 (random), which uses random or pseudo-random numbers. This is the most commonly used version for general purposes.

Are the UUIDs truly unique?

UUID v4 generates 122 random bits, making collisions extremely unlikely. The probability of generating two identical UUIDs is astronomically low (1 in 2^122).

Is this UUID generator free?

Yes, WKIT UUID Generator is completely free. No signup required, no hidden fees.