Convert XLS to EXCEL online, for free.
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Simply upload your XLS files and click the convert button. You can also batch convert XLS to EXCEL format.
We use both open source and custom software to make sure our conversions are of the highest quality. In most cases, you can fine-tune conversion parameters using “Advanced Settings” (optional, look for the icon).
Our XLS to EXCEL Converter is free and works on any web browser. We guarantee file security and privacy. Files are protected with 256-bit SSL encryption and automatically deleted after 8 hours.
Excel 97-2003 Workbook (XLS) is the original binary spreadsheet format of Microsoft Excel, built on the Binary Interchange File Format and used as the default until Excel 2007. An XLS stores worksheets, formulas, charts, and formatting in one proprietary file, and it can also carry VBA macros. Its main limitations are a ceiling of 65,536 rows per sheet and a greater risk of file corruption than the newer XLSX.
Current versions of Excel still open XLS in Compatibility Mode and offer to upgrade the file to XLSX.
LibreOffice Calc, Google Sheets, and Apple Numbers all read XLS. Because XLS files can contain macros, treat unexpected attachments with caution. Converting your archive keeps it safe and compact — our XLS to XLSX and XLS to PDF tools handle the job.
Developed by: Microsoft
Initial Release: 1987
An Excel file is a spreadsheet created in Microsoft Excel, saved today with the .xlsx extension. It organises data into rows and columns across one or more worksheets and stores far more than the numbers themselves: formulas, cell formatting, charts, pivot tables, conditional rules, and named ranges all live in the same file. Modern Excel workbooks use the open Office Open XML standard, which is why so many other programs can read them.
Microsoft Excel is the natural choice, and Excel for the web opens workbooks in a browser with a Microsoft account.
Without Excel, use Google Sheets, LibreOffice Calc, or Apple Numbers — all of them recalculate formulas. Advanced features such as pivot tables and macros may behave differently outside Excel. To circulate figures that recipients should read but not edit, convert the workbook with our Excel to PDF tool.
Developed by: Microsoft
Initial Release: 1985
FreeConvert.com can convert your other files to EXCEL format:
FreeConvert.com can convert your XLS files to these other formats:
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