インチをミリに変換する君 is a free Chrome add-on developed by sorashin. This useful tool allows users to easily convert measurements from inches to millimeters.

With this add-on, users can simply select a number in inches, right-click, and choose the "Convert to mm" option from the menu. The add-on will then convert the selected number to its equivalent value in millimeters, displaying it as "[converted value] mm".

This add-on provides a convenient way for users to quickly convert measurements from inches to millimeters without the need for manual calculations or searching for conversion tables. It is a handy tool for anyone who frequently works with measurements and needs to convert between these units.