This Lua module is used on approximately 2,800 pages and changes may be widely noticed. Test changes in the module's /sandbox or /testcases subpages, or in your own module sandbox. Consider discussing changes on the talk page before implementing them.

This module converts a limited set of characters between halfwidth and fullwidth forms.

From half-width to full-width

((#invoke:convert character width|full|text to convert))

From full-width to half-width

((#invoke:convert character width|half|text to convert))

• ((#invoke:convert character width|full|some text 0123456789)) → ｓｏｍｅ　ｔｅｘｔ　０１２３４５６７８９
• ((#invoke:convert character width|half|ｓｏｍｅ　ｔｅｘｔ　０１２３４５６７８９)) → some text 0123456789

Care should be taken when using this module with Hangul and katakana; as of September 2013 there is only limited support for katakana and no support for Hangul. Some of the more obscure punctuation characters are also not yet supported.

The character data used by the module is located at Module:Convert character width/data. Fixes and updates to the data set are welcomed enthusiastically.