ULID Generator
Generate sortable unique identifiers
How to Use
Generate ULID
Click Generate to create a new ULID with current timestamp.
View components
See the timestamp and random portions of the ULID.
Generate multiple
Set quantity to generate multiple ULIDs at once.
Copy result
Click copy to use the ULID in your application.
Frequently Asked Questions
What is a ULID?
ULID (Universally Unique Lexicographically Sortable Identifier) is like UUID but sortable by time. It has a timestamp component followed by random bytes.
Why use ULID instead of UUID?
ULIDs are sortable by creation time, more compact (26 characters), case-insensitive, and URL-safe. They're ideal for database primary keys where ordering matters.
Can I extract the timestamp from a ULID?
Yes, the first 10 characters encode millisecond-precision Unix timestamp. Our tool can decode this to show when a ULID was generated.
Are ULIDs unique?
Yes, the combination of timestamp and 80 bits of randomness makes collisions virtually impossible even at high generation rates.
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