Online Tools

ULID Generator

Generate and parse ULIDs — time-sortable unique identifiers using Crockford Base32.

Output

Click Generate to create ULIDs.

Step by step

How to use ULID Generator

  1. 1

    Choose how many ULIDs to generate or paste an existing ULID to inspect.

  2. 2

    Generate sortable identifiers or parse the encoded timestamp from an existing value.

  3. 3

    Copy the IDs or compare the decoded creation time during debugging.

Capabilities

What this tool handles

  • Time-sortable unique identifiers
  • Crockford Base32 encoding
  • Parse existing ULIDs to extract timestamp

Common uses for ULID Generator

  • Create database-friendly identifiers that sort approximately by creation time.
  • Inspect when an existing ULID was generated without querying its record.

What to check before using the result

The timestamp portion reveals creation time and does not make a ULID secret, authenticated, or safe as an authorization token.

Privacy and accuracy

Questions about ULID Generator

Does this tool upload my input?

The conversion or analysis runs in your browser. The application does not intentionally send the value you enter to a processing API. Standard hosting infrastructure can still receive request metadata when the page loads; see the privacy page for details.

Can I rely on the output without checking it?

Use the result as a focused development aid and verify it in the system where it will be used. Test representative edge cases and confirm the destination uses the same format, standard, and assumptions described on this page.

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