Step 1: Select the ranges you want to save as PDF. Step 2: Click Save to open a file transfer dialog box. A file transfer dialog box appears depending on the program type of your computer. If you are using Microsoft Office, click the DropDown menu in the corner and select the PDF option. Step 3: To convert the Excel workbook into a PDF, you need to click the Save PDF buttons. The other way to convert Excel workbooks into a PDF is to manually copy the whole worksheet from your hard drive to a computer and then paste the whole copy into the PDF file application.