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 File" button to select a file 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 XLS with RTF:
Name XLS RTF
Full name Microsoft Excel Binary File Format Rich Text Format
File extension .xls .rtf
MIME application/vnd.ms-excel text/rtf, application/rtf
Developed by Microsoft Microsoft
Type of format Spreadsheet Document file format
Introduction 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". The Rich Text Format (often abbreviated RTF) is a proprietary document file format with published specification developed by Microsoft Corporation for cross-platform document interchange with Microsoft products. Most word processors are able to read and write some versions of RTF.
Technical details OpenOffice.org has created documentation of the Excel format. Since then Microsoft made the Excel binary format specification available to freely download. Unlike many word processing formats, RTF code can be human-readable: when an RTF file is viewed as a plain text file, the contained ASCII text is legible. The formatting code is not too distracting nor counter-intuitive, provided that the document's creator kept formatting concise.
Associated programs Microsoft Office, LibreOffice, Kingsoft Office, Google Docs. WordPad, LibreOffice, Microsoft Word.
Sample file sample.xls sample.rtf
Wiki XLS on Wikipedia RTF on Wikipedia