Excel workbooks can be saved in different file formats depending on how they will be used. The standard format is .xlsx, but Excel also supports .xls, .csv, .pdf, and other file types.

Choosing the right format matters because some formats preserve formulas and formatting while others, like CSV, store only plain data. Beginners should understand these differences before sharing files.

Why It Matters

• Different formats serve different purposes
• .xlsx preserves most Excel features
• CSV is useful for plain data exchange

Reference:

Wikipedia: Microsoft Excel

https://en.wikipedia.org/wiki/Microsoft_Excel