The .xlsx is an open source filename extension format developed by Microsoft in collaboration with ISO/IEC and ECMA. It is part of the Open Document family of file formats. The .xlsx is associated with spreadsheet authoring applications particularly with Microsoft's Office Excel 2007 and above. The format has existed since 2005 and is also supported by several other proprietary and open source spreadsheet authoring software other than Microsoft's Office Excel. The xlsx format is the default filename extension for all spreadsheet documents produced using Microsoft Office Excel 2007 SP2 and above.
The comma-separated values file format or CSV for short is a common cross platform file format used for information exchange between disparate devices, systems, and software. Mainstream usage of the format begun in 2005, with RFC 4180 forming the basis of its specification. The format's strongest feature is the ability to store relational tabular data in a plain text format which can be imported and/or exported to any compatible application. Because of this feature and the relatively small file size, CSV is commonly used for exporting and importing data from populated databases or spreadsheet files that use a proprietary format, to other systems and applications that utilize different file formats and architectures. The csv format is limited though in its inability to represent records only from a relational data source. It does not support object oriented or hierarchical databases.
FreeFileConvert uses tuned encoding for XLSX to CSV conversions, preserving clarity while trimming file size. Finished audio streams instantly across phones, tablets, desktops, and modern browsers without extra tweaks.
Upload XLSX files from desktop, tablet, or cloud storage, queue multiple jobs, and let the converter finish autonomously. Return whenever convenient to download synchronized CSV results on any device you rely on.
Process up to 5 files sized 1000 MB per batch without splitting queues manually. Mixed-format uploads convert together, producing consistent CSV audio with dependable progress tracking.
The xlsx filename extension is a compressed archive with an xml directory structure. It is specified in the open standard ISO/IEC 29500-1:2012. .xlsx files do not support macros by design, for that, the .xlsm format should be used. A free compatibility update allows older versions of Microsoft Office Excel such as Office 2003 to open .xlsx documents.
The UTF-8 character collection set is the most commonly used collection set for the storage of data records in the csv file format. It is worth noting however that csv is not limited to a single character set and indeed can function with other character sets such as EBCDIC or Shift JIS. Each record in a csv file is typically a human readable plain text line delimited by a line break command. Field separations on a single csv record can be achieved using a comma, tab, or semicolon but every record should have the same number of field separations.
Upload your document file in the XLSX format from your device, Dropbox, or Google Drive.
Select CSV as the output format and click Convert. Adjust optional settings if needed.
Download the converted document file. Each file stays available for up to 5 downloads.