ULID Generator — Generate Sortable Unique IDs Online
ULID Generator creates ULIDs — 26-character base32 identifiers that encode a millisecond-precision timestamp in the first 10 characters followed by 16 random characters. ULIDs sort lexicographically by creation time, making them ideal for use as primary keys in databases.
Common Use Cases
- Generating time-sortable primary keys for database tables
- Creating identifiers for event sourcing systems
- Replacing UUIDs where chronological ordering matters
Frequently Asked Questions
Why use ULIDs instead of UUIDs?
ULIDs are lexicographically sortable (newer IDs sort after older ones), which improves database index performance and makes debugging easier. They are also slightly shorter (26 vs 36 characters).
Privacy & Security
This tool runs entirely in your browser using client-side JavaScript. No data is sent to a server — your input never leaves your machine. SmartDevBox has no account system, no usage tracking, and no paid tier. See the Privacy & Security page for full details.
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