ULID Generator - Free Online Tool | PivaBox

Generate sortable unique identifiers — ULIDs are time-based and lexicographically ordered

How to Use ULID Generator

1. Set the number of ULIDs you want to generate using the count input (1-100)
2. Click Generate to create time-based, sortable ULID identifiers
3. Click any ULID to copy it individually, or use Copy All to copy the entire list at once

Frequently Asked Questions

Is the ULID Generator free?

Yes, PivaBox ULID Generator is completely free to use. There are no charges, subscriptions, or hidden fees.

Are ULIDs uploaded to a server?

No. All ULID generation happens entirely in your browser using the <code>crypto.getRandomValues()</code> API. Your identifiers never leave your device.

What is a ULID and why use it?

A ULID (Universally Unique Lexicographically Sortable Identifier) is a 26-character identifier that encodes a 48-bit timestamp followed by 80 bits of randomness. Unlike UUID v4 which is purely random, ULIDs sort chronologically by creation time, making them ideal for database primary keys. The Crockford Base32 encoding ensures readability and URL-safety. The first 10 characters represent the timestamp, and the remaining 16 characters provide uniqueness.