Gerador UUID/GUID

Gere identificadores únicos (UUID/GUID) com formatos personalizáveis

Versão UUID:

Selecione a versão UUID para gerar

Quantidade:

Número de UUIDs para gerar (1-100)

Maiúsculas/Minúsculas:

Minúsculas Maiúsculas

Hífens:

Incluir hífens

Chaves:

Incluir chaves { }

UUIDs gerados:

0 UUIDs

Validador UUID

Digite o UUID para validar:

UUID/GUID Generator Documentation

UUID Versions

Version 1 (Timestamp-based)

Generated using the current timestamp and MAC address. Contains time information and can be traced back to the generating machine.

Example: 6ba7b810-9dad-11d1-80b4-00c04fd430c8

Version 4 (Random)

Generated using random or pseudo-random numbers. Most commonly used version due to simplicity and no privacy concerns.

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

NIL UUID

A special UUID consisting of all zeros, used to represent an empty or null UUID value.

Example: 00000000-0000-0000-0000-000000000000

UUID Format

A UUID is typically represented as a 36-character string in the format: 8-4-4-4-12 hexadecimal digits

xxxxxxxx-xxxx-Mxxx-Nxxx-xxxxxxxxxxxx

M: Indicates the UUID version (1, 4, etc.)
N: Indicates the UUID variant (always 8, 9, a, or b)
x: Any hexadecimal digit (0-9, a-f)

Common Use Cases

Database Primary Keys

Use UUIDs as primary keys to ensure uniqueness across distributed databases without central coordination.

Session Management

Generate unique session identifiers for web applications to track user sessions securely.

File Naming

Create unique file names for uploads to prevent conflicts and ensure file uniqueness.

Distributed Systems

Identify entities in distributed systems without requiring coordination between nodes.

Best Practices

Use Version 4 (random) for most applications due to simplicity and privacy
Use Version 1 only if timestamp information is required
Store UUIDs in binary format in databases for better performance
Validate UUID format before processing to ensure data integrity
Consider collision probability: while extremely low, always handle duplicates gracefully
Use lowercase format for consistency unless uppercase is specifically required

Ferramentas Relacionadas

Gerador de Hash MD5/MD4

Gere valores de hash MD5 e MD4 para texto ou arquivos com múltiplos formatos de saída

Gerador de Hash SHA

Gerador de hash SHA online suportando algoritmos SHA-1, SHA-256, SHA-384, SHA-512

Gerador de Senhas

Gere senhas aleatórias fortes e seguras com comprimento personalizável, tipos de caracteres, indicador de força e geração em lote

Gerador de Dados de Teste

Gere dados de teste realistas incluindo nomes, emails, telefones, endereços. Suporta 12 locais e múltiplos formatos de saída

Gerador de Código QR

Gere códigos QR personalizados para texto, URL, WiFi, vCard, email, SMS e muito mais

Codificador/Decodificador Base64

Codifique e decodifique strings Base64 rapidamente, suportando conversão de texto e arquivo