Identifier tool
ULID Generator
Generate a compact, time-sortable identifier with secure random entropy.
Generated locally
Your generated ULID
Timestamp:
Time sortable
The first 10 characters encode millisecond time.
128 bits
Compact Crockford Base32 without ambiguous letters.
Generated locally from the current time and 80 bits of secure randomness. Nothing leaves your browser.
What makes a ULID useful?
ULIDs combine a millisecond timestamp with 80 random bits. Their fixed-width Base32 representation sorts chronologically and remains easier to read than many binary identifiers.
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