How to Convert PowerPoint to Google Slides
1. Open Google Drive.
Access your Google Drive under the Google Apps icon next to your Google Account profile

2. Select "New" in the upper left-hand corner of the screen.
New will reveal a drop down menu with several options.

3. Select "File Upload."
After you select file upload a pop-up menu will appear to allow you to navigate to your PowerPoint file location.

4. Select the desired PowerPoint presentation.
Select the PowerPoint presentation file and click open.

5. The PowerPoint file will show on your Google Drive
The file will have a preview of your presentation on your Google Drive.

6. After uploading, right click and select "Open with," then select "Google Slides."
The PowerPoint presentation will open in Google Slides. You are almost there.

7. From "File" Select "Save as Google Slides."
Your will see a Google Slides file next to the PowerPowerPoint file on your Google Drive. That is it.
