Convert document files online

(DOC, DOCX, XLS, XLSX, PPT, PPTX, HTML, TXT, CSV, RTF, ODT, ODS, ODP, WPS etc.)
Conversion Results:
# Output File Source File Action

Steps:

1. Click "Choose Files" button to select multiple files on your computer. You can also click the dropdown button to choose online file from URL, Google Drive or Dropbox. A target format can only be converted from certain document formats. For example: It can convert DOC to DOCX, but it can't convert DOC to XLSX.

2. Choose a target document format. The target document format can be PDF, DOC, DOCX, XLS, XLSX, PPT, PPTX, HTML, TXT, CSV, RTF, ODT, ODS, ODP, XPS or OXPS. When choosing a target format, it will list what source formats can be converted to the target format.

3. Click "Convert Now!" button to start conversion. The output files will be listed in the "Conversion Results" section. Click icon to show file QR code or save file to online storage services such as Google Drive or Dropbox.

Compare XLSX with XLS:
Name XLSX XLS
Full name Office Open XML Document Microsoft Excel Binary File Format
File extension .xlsx, .xlsm .xls
MIME application/vnd.-openxmlformats-officedocument.-spreadsheetml.-sheet application/vnd.ms-excel
Developed by Microsoft Microsoft
Type of format Spreadsheet Spreadsheet
Introduction The Office Open XML file formats are a set of file formats that can be used to represent electronic office documents. There are formats for word processing documents, spreadsheets and presentations as well as specific formats for material such as mathematical formulae, graphics, bibliographies etc. Microsoft Excel up until 2007 version used a proprietary binary file format called Excel Binary File Format (.XLS) as its primary format. Excel 2007 uses Office Open XML as its primary file format, an XML-based format that followed after a previous XML-based format called "XML Spreadsheet".
Technical details Office Open XML documents are stored in Open Packaging Convention (OPC) packages, which are ZIP files containing XML and other data files, along with a specification of the relationships between them. Depending on the type of the document, the packages have different internal directory structures and names. OpenOffice.org has created documentation of the Excel format. Since then Microsoft made the Excel binary format specification available to freely download.
Associated programs Microsoft Office, LibreOffice, Kingsoft Office, Google Docs. Microsoft Office, LibreOffice, Kingsoft Office, Google Docs.
Sample file sample.xlsx sample.xls
Wiki XLSX on Wikipedia XLS on Wikipedia