ULID Generator
Generates a correctly-shaped, 26-character ULID (a timestamp-sortable unique identifier) built from the current time plus random bits — a realistic example, never recorded or looked up anywhere.
What this generator does
Produces a ULID — a 26-character identifier that encodes its creation time in the leading characters, so a list of ULIDs sorts into the order they were made. That is the practical difference from a UUID, which is entirely random and sorts arbitrarily.
How to use this tool
- Press generate for a ULID example.
Worked examples
- Format
- 01ARZ3NDEKTSV4RRFFQ69G5FAV — Crockford base32, 26 characters
- Structure
- 48 bits of timestamp followed by 80 bits of randomness
Common use cases
- Placeholder database IDs
- Documentation and API examples
- Testing ULID-parsing code
Limitations and good to know
- The timestamp portion makes creation time readable to anyone holding the identifier, so a ULID is a poor choice where that would leak something.
A freshly generated example — never recorded, looked up, or tied to any real record.
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