A Nano ID (length 21)
V1StGXR8_Z5jdHi6B-myT
Nano ID / ULID Generator
Generate URL-safe Nano IDs or sortable, timestamp-based ULIDs in bulk.
Nano ID: a compact, URL-safe random string from a 64-character alphabet.
Generated IDs
The result will appear here.
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About this tool
UUIDs aren't the only way to generate a unique ID. Nano ID produces a shorter, URL-safe string from a larger, customizable alphabet — popular in URLs and slugs. ULID produces a 26-character, Crockford Base32 identifier that starts with an encoded timestamp, so ULIDs sort chronologically and a database index built on them stays naturally ordered — something a random UUID v4 can't do.
How to use it
- Choose Nano ID or ULID.
- For Nano ID, pick a length (21 is the npm package's default, chosen so collisions stay negligible at real-world scale).
- Pick how many to generate and press Generate.
- Copy them all or download as a text file.
Examples
A ULID
01ARZ3NDEKTSV4RRFFQ69G5FAV
Common problems
- I need IDs that sort in insertion order in my database.
- Use ULID, not Nano ID or UUID v4 — its first 10 characters encode the generation timestamp, so lexicographic order matches creation order.