Convert Excel XLSX to XLSB in C#, VB.NET, Java, PHP, ASP classic, C++, C++.NET, VB6, VBS! XLS, XLSX, XLSM, XLSB spreadsheets by EasyXLS.

https://www.easyxls.com/manual/basics/convert-xlsx-to-xlsb.html

Convert Excel XLSX to XLS in C#, VB.NET, Java, PHP, ASP classic, C++, C++.NET, VB6, VBS! XLS, XLSX, XLSM, XLSB spreadsheets by EasyXLS.

https://www.easyxls.com/manual/basics/convert-xlsx-to-xls.html

Convert Excel XLS to XLSB in C#, VB.NET, Java, PHP, ASP classic, C++, C++.NET, VB6, VBS! XLS, XLSX, XLSM, XLSB spreadsheets by EasyXLS.

https://www.easyxls.com/manual/basics/convert-xls-to-xlsb.html

Convert Excel XLS to XLSX in C#, VB.NET, Java, PHP, ASP classic, C++, C++.NET, VB6, VBS! XLS, XLSX, XLSM, XLSB spreadsheets by EasyXLS.

https://www.easyxls.com/manual/basics/convert-xls-to-xlsx.html

Convert Excel file to XML Spreadsheet in C#, VB.NET, Java, PHP, ASP classic, C++, C++.NET, VB6, VBS! XLS, XLSX, XLSM, XLSB spreadsheets by EasyXLS.

https://www.easyxls.com/manual/basics/convert-excel-to-xml-spreadsheet.html

Convert Excel file to XML in C#, VB.NET, Java, PHP, ASP classic, C++, C++.NET, VB6! XLS, XLSX, XLSM, XLSB spreadsheets by EasyXLS.

https://www.easyxls.com/manual/basics/convert-excel-to-xml.html

Convert Excel file to CSV in C#, VB.NET, Java, PHP, ASP classic, C++, C++.NET, VB6, VBS! XLS, XLSX, XLSM, XLSB spreadsheets by EasyXLS.

https://www.easyxls.com/manual/basics/convert-excel-to-csv.html

Convert Excel file to HTML in C#, VB.NET, Java, PHP, ASP classic, C++, C++.NET, VB6! XLS, XLSX, XLSM, XLSB spreadsheets by EasyXLS.

https://www.easyxls.com/manual/basics/convert-excel-to-html.html

Convert CSV file to Excel in C#, VB.NET, Java, PHP, ASP classic, C++, C++.NET, VB6! XLS, XLSX, XLSM, XLSB spreadsheets by EasyXLS.

https://www.easyxls.com/manual/basics/convert-csv-to-excel.html

Convert HTML file to Excel in C#, VB.NET, Java, PHP, ASP classic, C++, C++.NET, VB6! XLS, XLSX, XLSM, XLSB spreadsheets by EasyXLS.
https://www.easyxls.com/manual/basics/convert-html-to-excel.html