Extract date and time from UUIDs

A UUID (Universally Unique Identifier) or GUID (Globally Unique Identifier) is a 128-bit label used to uniquely identify data across computer systems. While most UUIDs are random, certain versions include a timestamp that tells you exactly when they were created.

This tool helps you extract that hidden date from the most common "timestamped" formats:

  • UUIDv1: An older format that uses the creation time and the computer's network address.
    Example: 00000000-0000-0000-0000-000000000000
  • UUIDv4: The most common version; it is entirely random and contains no timestamp information.
    Example: 00000000-0000-0000-0000-000000000000
  • UUIDv7: A modern, sortable, database-friendly format that uses the Unix timestamp.
    Example: 00000000-0000-0000-0000-000000000000
  • ULID: A sortable 128-bit alternative to UUID that also includes a timestamp.
    Example: 00000000000000000000000000
Examples are auto-generated based on the current time. Clicking one will fill the input field below.

Detect UUID version and convert to a readable date

Enter your UUID or ULID:

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Also see the Snowflake ID converter for another type of timestamped identifier.