ULID Generator

About this Tool

While UUIDs are great, their complete randomness means they fragment database indexes and cannot be sorted by creation time. ULIDs solve this. They encode a millisecond-precision timestamp in the first 48 bits, followed by 80 bits of cryptographic randomness. This means they are completely unique, but can be safely sorted chronologically in your database.

Frequently Asked Questions

Os ULIDs são compatíveis com colunas UUID?

Ambos são identificadores de 128 bits. Embora pareçam diferentes como strings (ULIDs usam codificação Base32 de 26 caracteres, UUIDs usam Hex de 36 caracteres), ambos podem ser armazenados em colunas de banco de dados de 128 bits padrão (como tipos UUID no Postgres) se convertidos adequadamente.

O ULID é case-sensitive?

Não. O encoding Base32 padrão usado para ULIDs exclui caracteres confusos como I, L, O e U, e é totalmente case-insensitive.

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