# ULID Generator

Generate sortable ULIDs, single or in bulk.

## URL

https://ilham.dev/tools/ulid-generator/

## What It Does

ULIDs are 128-bit identifiers like UUIDs, except the first 48 bits are a millisecond timestamp. That makes them sortable by creation time while staying unique, which is handy as a primary key when you want insertion order without keeping a separate timestamp column.

## Features

- Runs in the browser
- No login required

## Input

text input.

## Output

text output.

## Privacy

Processing happens locally in the browser.

No input data is uploaded to ilham.dev.

- Requires login: false
- Requires API key: false
- Stores user data: false


## Examples

- Should I use a ULID or a UUID?
- Are ULIDs case-sensitive?




## Questions

### Should I use a ULID or a UUID?

A ULID carries its creation time in its first characters and can sort roughly by time. A random UUID v4 does not expose that timestamp. Choose the format your application accepts; neither one replaces access control.

### Are ULIDs case-sensitive?

The canonical form is uppercase Crockford Base32, and that is what this tool produces.