HTML Converter is a free utility for converting special characters to corresponding HTML character codes in HTML, PHP, and ASP files.

Right-click the HTML file you want to convert. Click "Open With," then click "Notepad." After Notepad and the code loads, click "Save As" to open the dialog window. Type "index.php" in the "File ...

If you have an existing HTML template that you wish to convert to a Joomla template, you will need to add some PHP code to the file.