xlsx to Excel | Zamzar - Free online file conversion

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Device / Program	Excel
Category	Document File
Description	Microsoft Excel 1997-2003 is the name of the file type created by four different releases of Microsoft Excel. The release of Microsoft Excel 97 was a major leap forward in terms of functionality and usability compared to the previous version, Excel 95. Excel 2000, Excel XP and Excel 2003 all followed featuring tweaks to the appearance and functionality however the core application remained consistent. It was during this period that computers became incredibly popular for both personal and business use resulting in Excel becoming the de facto spreadsheet application. Excel provided functionality to a basic user with a requirement to store data in an organised fashion up to advanced users requiring formulas, charts and pivot tables.
Actions	XLSX to Excel - Convert file now View other document file presets
Technical Details	Microsoft Excel 97-2003 used XLS as the file extension. This was a binary file format. Later versions of Excel make use of a XML for file formats. Excel 2003 limits the user to a maximum of 65,000 rows per worksheet and a maximum of 256 columns. By comparison, later versions of Excel provide support for over one million rows and 16,000 columns. Excel 2003 features a 256 colour palette limit whereas later versions allow for unlimited colours.
Developed by	Microsoft
Useful Links	Detailed Information on Excel 97-2003 File Format Differences Between Excel 2003 & Excel 2007 Convert files to Excel

Device / Program	xlsx
Category	Document File
Description	As part of Microsoft's 2007 Office suite of products another open XML document type was introduced. This time in the Excel sphere, Excel is known world wide. It is a powerful tool you can use to create and format spreadsheets, graphs, do complex maths and much more. You are able to create diverse spreadsheets with multiple workbooks, formulae, and various data sources. Files can be saved in the XLSX format, which is based on the Open XML format and uses ZIP compression for smaller file sizes.
Actions	xlsx Converter View other document file presets
Technical Details	XLSX improves file and data management and data recovery. XLSX extends what is possible with the binary files of earlier versions. Any application that supports XML can access and work with data in the new file format. The application does not need to be a Microsoft product it can be any application. Users can also use standard transformations to extract or repurpose the data. In addition, security concerns are drastically reduced because the information is stored in XML, which is essentially plain text. Thus, the data can pass through corporate firewalls without hindrance.
Developed by	Microsoft
Useful Links	More detail about the XLSX format Convert files to xlsx

Using Zamzar it is possible to convert a variety of formats to the Excel format.

Please see a list of supported formats below: