Learn how to create or edit .csv files so you can import your contacts to Outlook or another email provider.

In the Save As dialog box, under Save as type box, choose the text file format for the worksheet; for example, click Text (Tab delimited) or CSV (Comma delimited).

Browse to the .csv file you want to import. Under Options, choose whether to replace duplicates (existing contacts), create duplicate contacts, or not import duplicates.

You import contacts to Outlook from other email providers using the Outlook Import/Export wizard. Import a csv file, Excel spreadsheet, vCard.

If you're importing into a new spreadsheet any contacts from either a text (.txt) or a comma-separated value (.csv) file, the Text Import Wizard can help you import and format your data.

Open the workbook you want to save. Click File > Save As. Pick the place where you want to save the workbook. In the Save As dialog box, navigate to the location you want. Click the arrow in the Save …

Lists the file formats that are supported in Excel. The topic also includes a list of unsupported file formats and some suggested workarounds.

Here's how: Go to Data > Get & Transform Data > Get Data > From File. Select the type of file that you want to import (such as From Excel Workbook or From Text/CSV). Select the file you want to import, …

See a list of supported file formats and descriptions for Excel for Mac workbooks.

File formats support by Microsoft Project. Use this information to learn how to open and view previous versions of projects.