About this tool
Create ULIDs (Universally Unique Lexicographically Sortable Identifiers) right in your browser using the crypto API for randomness.
Frequently asked questions
Why are ULIDs sortable?
The first 48 bits encode the creation time in milliseconds, so ULIDs generated later sort after earlier ones as plain text.
How random is each ULID?
The last 80 bits come from crypto.getRandomValues, giving strong, collision-resistant randomness generated locally.