Which is better XLS or CSV?

What is difference between Xcel and CSV?

KEY DIFFERENCE CSV is a plain text format with a series of values separated by commas whereas Excel is a binary file that holds information about all the worksheets in a workbook. CSV file can't perform operations on data while Excel can perform operations on the data.

Are CSV files smaller than XLS?

Always the size of csv is either equal or greater than xls/x file size. Sometimes it is going to 10x size also. Its again based on the data(repetative) in the file.

When should I use CSV vs XLSX?

CSV files are commonly used for data exchange between platforms, making the data “raw” again so it can be processed by different applications. This is the most flexible data format. XLSX is the file extension for a Microsoft Excel Spreadsheet.

What is the best Excel format to use?

Most of the time you use the XLSX format: It's save (can't store malicious code), has the maximum number of rows and columns and is best known. XLSX is available since Excel 2007 and replaces the old XLS file type. It uses the open XML standard so which is documented well.