About UtilBox

What UtilBox is

UtilBox is a set of free tools for everyday tasks you only need once in a while, such as converting photos, writing a Korean address in English, or converting lunar dates. There is nothing to install and no account to create.

It stays on your device

Every tool runs inside your browser. Photos and anything you type are not sent to a UtilBox server; there is no server that receives files. This promise is checked automatically before each release.

Accuracy

Where a tool follows a rule, the page names its source, such as the official passport romanization rules or the Korea Astronomy and Space Science Institute lunar data. The lunar table was checked against the official data for every day from 1950 to 2050. If you find a mistake, please email us.