How to open a .csv file in Excel. Opening a .csv file is as easy as opening a .txt file, and usually, you won’t have to clean up the data before doing so because the save task inserts the delimiter.

How to Convert All Excel Sheets to CSV With Macros. Excel's Save As command lets you save a single worksheet in the CSV (comma seperated value) format, but not an entire workbook.

And while you can import CSV files into Excel and work with them there, it can get confusing—you have to keep track of which Excel features work in CSV files, and which do not.