Google docs has a feature which can be used to convert a document to PDF. So you don’t have to look for any free online PDF converters instead use Download As option available as part of the File menu.
Launch the Google docs document that needs to be converted in to PDF. Click the File menu then navigate to Download as option.
From the Download as sub menu option and pick PDF from the list.
This will launch another browser session and the document will be downloaded as a PDF file.