RFC 9562 · TIME-ORDERED

UUID v7 Generator

Gerar UUID v7 identifiers online using RFC 9562. Criar sortable, time-ordered UUIDs in bulk, inspect timestamps e export UUID v7 values diretamente no navegador.

Browser-only: UUIDs are generated locally and are not uploaded.

Generated UUID v7

Generated UUID v7 values will appear here.

O que é UUID v7?

UUID v7 é um modern time-ordered UUID formato defined by RFC 9562.Unlike UUID v4, which is primarily aleatório, UUID v7 places a Unixtimestamp in milliseconds at the beginning of the identifier.

This timestamp prefix makes UUID v7 values naturally sortable bycreation time. That characteristic makes UUID v7 useful para banco de dadosprimary keys, event identifiers, distributed systems e recordsonde chronological ordering is useful.

UUID v7 Structure

  • 48 bits:Unix timestamp in milliseconds
  • 4 bits:UUID versão, set to 7
  • 12 bits:UUID v7 aleatório/custom field
  • 2 bits:RFC variante
  • 62 bits:aleatório/custom data

UUID v7 vs UUID v4

UUID v4 is useful quando a aleatório opaque identifier is required.UUID v7 is useful quando identifiers should also carry sortablecreation-time informatoion. The choice depends on whether timestampvisibility e chronological ordering are useful para your aplicação.

Common UUID v7 Use Cases

  • Database primary keys
  • Event IDs
  • Distributed system identifiers
  • Log e audit record identifiers
  • Sortable API resources
  • Mensagem e job identifiers

Frequently Asked Questions

UUID v7 é um time-ordered UUID formato defined by RFC 9562. It places a Unix timestamp in milliseconds in the most significant 48 bits e uses the remaining bits para versão, variante e aleatórioness.

UUID v4 is primarily aleatório, while UUID v7 contém a millisecond timestamp at the beginning. This makes UUID v7 values naturally sortable by creation time e can make them useful para banco de dados primary keys e event identifiers.

Sim. The timestamp portion of UUID v7 is placed at the beginning of the identifier, so canonical UUID strings generally sort according to their creation timestamp.

UUID v7 contém a Unix timestamp com millisecond precision. Therefore, the timestamp portion can reveal approximately quando the UUID was gerado.

UUID v7 is suitable para unique identifiers quando gerado com a cryptographically secure aleatório source. However, because the timestamp is visible, UUID v7 should not be treated as a completely opaque identifier.

Sim. This UUID v7 Generator suporta bulk generation diretamente no navegador.

UUID v7 can be a useful choice para banco de dados identifiers because its timestamp prefix oferece natural time ordering while retaining a large aleatório portion.

Não. UUID generation e timestamp analysis are performed locally in your browser. The gerado UUID values do not need to be sent to a server.