Plugin / JKL Unit Converter

Aaron Snowberger



I’m an American expat in South Korea so I find I’m constantly wanting to convert
between various units of measurement for different things. My family talks to me
over Skype in Fahrenheit; recipes online call for 8 ounces of something; and I always
wondered what various Korean house sizes and floor plans (pyoung) actually were in
square meters or square feet.

Well now, I’ve created just the plugin to take care of all of those kinds of
conversions. It currently includes functions for 14 different conversion formulas
(like length, weight, temperature, speed, etc), but there are plans for about 20
more! (For a full list of conversion formulas and units, see the plugin NOTES
section below.)

This plugin was inspired by Google’s Unit Converter and includes the majority of
the units listed on their website
(including some extra silly ones I’ve found and a handful of Korea specific units
of measurement).

Requires WordPress 3.5 and PHP 5.4 or later.

Special Features

  • Provides varying levels of complexity for conversion lists (Basic – 6 types,
    Default – 14 types)
  • Provides a default list of the most common units for each list, but also a checkbox
    to enable ALL unit types (including some obscure ones from ancient history and fiction)
  • Lists values are dynamically controlled with JavaScript so that as soon as you
    change list types, the units of measurement are immediately switched (without page


  • Multiple widgets are allowed at once (on the same Post/Page)
  • Multiple shortcodes (on the same Post/Page) are disabled – multiple shortcodes
    will display only ONE form
  • On Posts/Pages with a shortcode, the widget will be disabled

Planned Upcoming Features

  • AJAX form submission to prevent page reload
  • An Advanced List of conversion formulas – 32 types
  • More conversion units supported
  • Possibly allow users to select whether or not to display multiple forms in shortcodes
    and/or widgets


  • English (EN) – default
  • Korean (KO) – upcoming

If you want to help translate the plugin into your language, please have a look
at the .pot file which contains all definitions and may be used with a [gettext]

If you have created your own language pack, or have an update of an existing one,
you can send your [gettext .po or .mo file] to me so that I can bundle it in the

Contact Me

If you have questions about, problems with, or suggestions for improving this
plugin, please let me know at the support forums

Want updates about my other WordPress plugins, themes, or tutorials? Follow me


Click here to visit the forum for this plugin


This plugin uses:


This program is free software; you can redistribute it and/or modify it under the terms
of the GNU General Public License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this
program; if not, write to the Free Software Foundation, Inc., 51 Franklin St, Fifth
Floor, Boston, MA 02110-1301 USA


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