Part of the digital toolset of SavantTools.com  
HTML Encode / HTML Decode
Online tool to transform an HTML encoded string to plain text, and the reverse.
            encode unicode characters   encode spaces
output
Conversion is done in your browser.  Text is not sent to the server. Uses a Javascript class based on the one by strictly-software.

Action Links:
      http://savanttools.com/html-encode.asp?action=decode&txt=<encoded-text>
      http://savanttools.com/html-encode.asp?action=encode&txt=<plain-text>
      http://savanttools.com/html-encode.asp?action=encode&unicode=no&txt=<plain-text>
      http://savanttools.com/html-encode.asp?action=encode&spaces=yes&txt=<plain-text>

Closely related:  Encode unicode entities   (?)