If you have existing files, you can import and convert them to Docs, Sheets, or Slides.
Go to Drive.
Click
NewFile Upload.
Choose the file you want to import from your computer to add it to Drive.
In the Upload complete window, click Show file location .Right-click the file and select Open withGoogle Docs/Sheets/Slides.
Converting your file from another program creates a copy of your original file in a Docs, Sheets, or Slides format. You can then edit the file in your browser.
Have a Microsoft file?
If you've already stored Microsoft files in Drive, you can also update them without converting them.