Generate ULID NanoID KSUID

Open this example in ULID, NanoID & KSUID Generator

Open the tool, then paste the sample input below. Everything runs locally in your browser.

Open this example in ULID, NanoID & KSUID Generator →

The problem

Different systems need different identifier shapes. UUIDs are common, ULIDs and KSUIDs sort by time, and NanoID is compact for user-facing or short-lived records.

Sample input

ID choice

Need 5 sortable IDs for test orders created today.

Expected output

Generated values

01J0Q9Z7Y8N6P3W6Y2E1K8V5MD
01J0Q9Z7Y9S9VG5ZQ5Q8J8X2GP

How to do it

Choose the ID type.
Choose how many IDs to generate.
Set length or alphabet options when relevant.
Generate the IDs.
Copy the list into fixtures or test data.

Common mistakes

Using sortable IDs where random UUIDs are required by a system contract.
Assuming every ID format is globally sortable.
Changing NanoID length without considering collision risk.
Using generated test IDs as production secrets.

Related tools

FAQ

When should I use ULID or KSUID?

Use them when lexicographic sorting by creation time is useful and your system accepts that ID format.

When is NanoID useful?

NanoID is useful when you need compact random IDs with configurable length and alphabet.

Are IDs generated locally?

Yes. ID generation runs in your browser.

Is my data uploaded anywhere?

No. This workflow runs locally in your browser unless you explicitly copy or share the result yourself.

This guide uses browser-local tooling. Avoid pasting production secrets unless you understand what the tool displays and shares.

Explore related tools

Continue with adjacent browser-based tools for the same workflow.

View utility and QA tools →

Generate sortable test identifiers: quick answer

Use this when mock rows, distributed events, test fixtures, or demos need unique IDs with predictable format constraints. Paste or load the artifact into the linked tool, run the local check, then copy only the safe result or summary into your PR, ticket, or test notes.

What to verify

Choose UUID for compatibility, ULID or KSUID for time-sortable records, and NanoID for compact browser-safe identifiers. If a result will be shared outside your team, run a privacy or secret scan first and replace real values with safe examples.

Recommended next steps

Open ID Generator for the main task.
Use UUID Generator when you need a second validation pass.
Return to Use Cases to find related workflows for the same artifact.

Practical example and expected result

Generate sortable or compact IDs locally for test data, fixtures, logs, and distributed systems without calling a server. In practice, this is most useful when you need a quick, repeatable check on a developer artifact before adding it to a ticket, pull request, test fixture, or support note.

A realistic input for this workflow is Need 5 sortable IDs for test orders created today.. The expected result should resemble 01J0Q9Z7Y8N6P3W6Y2E1K8V5MD 01J0Q9Z7Y9S9VG5ZQ5Q8J8X2GP, with the same important values preserved.

Troubleshooting checklist

Confirm you copied the complete developer artifact and not only a partial line or truncated preview.
Run the local tool once with a safe sample, then repeat with the real data only if your team policy allows it.
Check quoting, escaping, whitespace, encoding, timestamps, and environment-specific values before trusting the result.
Before sharing output, remove secrets, tokens, cookies, customer data, and production hostnames that are not needed for the review.

Next useful steps

Open this example in ULID, NanoID & KSUID Generator → for a related validation or follow-up step.
UUID Generator for a related validation or follow-up step.
Synthetic Data Generator for a related validation or follow-up step.
Use Magic Box when you are not sure which tool should handle the next artifact.

Review checklist before sharing the result

For Generate ULID, NanoID, and KSUID values, the safest workflow is to test with a small sample, confirm the output shape, then repeat with the real artifact only when needed. Keep the original input open until you verify that no value was dropped, decoded twice, sorted unexpectedly, or changed from text into a different type.

Before copying the result into a pull request, issue, chat thread, or support ticket, scan for private values. Replace real IDs, bearer tokens, session cookies, email addresses, internal hostnames, and customer data with placeholders. If another tool is listed above, use it as the second pass rather than manually editing complex output.

Keep one line of context explaining why the transformation was needed.
Preserve enough sample structure for a reviewer to reproduce the result locally.
Note any assumptions about encoding, timezone, delimiter, schema version, or runtime environment.