.. highlightlang:: us .. index:: Overview Excel Files, Excel Files .. _overview-excel-files: Overview Excel Files ==================== BIFF (Binary Interchange File Format) is the data format for the Microsoft Excel spreadsheet program. BIFF files normally carry the file name extension :file:`.xls`. UniPlot can import Excel Versions 2.1 to 12.0 (Excel 2007). Check the user manual of the program you created your data with to see if it can write BIFF files (Excel files). It is easier for UniPlot to import Excel files than ASCII files. The standard file name extension of Excel 2007 files is :file:`.xlsx`. Excel 2007 binary format (:file:`.xlsb`) can only be read. .. us.makeindex excel-read, Reading Excel Files .. include:: ../ftab/excel-read.ftab .. us.makeindex excel-write, Writing Excel Files .. include:: ../ftab/excel-write.ftab .. us.indexlist ExcelFilesIsFileExcelIsFileExcelUTXExcel,Excel Files,IsFileExcel,IsFileExcelUTX,ExcelGetSheetNames,ExcelRead,ExcelRead2,ExcelRead3,ExcelWrite,ExcelWriteEx .. include:: ../ftab/ExcelFilesIsFileExcelIsFileExcelUTXExcel.ftab .. seealso:: :ref:`overview-files`, :ref:`overview-netcdf-files`, :ref:`overview-binary-and-text-files`, :ref:`functions-by-categories` :sub:`id-1062068`