About

UtilShelf is a site that publishes calculation, formatting, and conversion tools.

What we publish

Every tool page carries the tool itself, how to use it, example input, and its limitations.

As a rule, everything you enter is processed inside your browser. Any exception is stated on the tool page itself.

The site is published in Japanese and English. Use the language switch at the top of the page to move to the same tool in the other language.