Which Excel file format is the smallest?

Is XLSX file smaller than CSV?

A CSV file will often be larger than the XLSX it was created from. This is because in XLSX is a actually a compressed (zipped) file - you can unzip it with a standard compression tool and check it out for yourself. You will see smaller XLSX files if there is a lot of repeat data.

Is Excel smaller than CSV?

Excel is generally larger, slower and more complicated when compared to CSV. CSV is generally faster and less complicated when compared to Excel. Text editors cannot edit files saved in Excel format, and also, Excel file can be password protected.

Which Excel format consumes less space?

Save your spreadsheet in binary (. xslx). The default format is XML based, which is important if you're using your data with third-party programs because XML is an open standard. However, for most purposes, the binary format is sufficient and saves to a smaller file. Go to File > Options > Save.

Why is XLSB smaller than XLSX?

XLSB uses considerably less space for saving the same workbook. It has been found to take 2/3rd of space as compared to the same XLSX file. XLSX files are encoded/decoded as XML files to be saved/loaded from disc. Saving plain text files takes more time and affects the loading/saving of such files.