XLS to XLSX Converter
Batch convert xls files to xlsx format online for free
Choose files or drag & drop them here.
Only you have access to your files.
All files will be deleted after one hour.
How to convert XLS files to XLSX online?
Step-by-step guide to convert xls to xlsx using AnyConv. It works on PC (Windows, Mac, Linux) and mobile devices (iPhone, Android).
Drag and drop your XLS file into the upload area. The maximum file size is 100 MB.
XLS to XLSX
Click "Convert" to change xls to xlsx. The conversion usually takes a few seconds.
Download your XLSX
Now you can download the XLSX file. The download link only works on your device.
- First you need to add file for conversion: drag and drop your XLS file or click the "Choose File" button. Then click the "Convert" button. When XLS to XLSX conversion is completed, you can download your XLSX file.
- Document conversion is pretty fast. You can change XLS to XLSX in a few seconds.
- Of course! We delete uploaded files immediately, and converted ones after 1 hour. No one has access to your files. File conversion (including XLS to XLSX) is absolutely safe.
- Yes, you can use AnyConv on any operating system that has a web browser. Our XLS to XLSX converter works online and does not require software installation.
Information about XLS and XLSX file formats
|🔸 File format||XLS||XLSX|
|🔸 Full name||XLS - Microsoft Excel Binary File Format||XLSX - Office Open XML Document|
|🔸 File extension||.xls||.xlsx, .xlsm|
|🔸 MIME type||application/vnd.ms-excel||application/vnd.-openxmlformats-officedocument.-spreadsheetml.-sheet|
|🔸 Developed by||Microsoft||Microsoft|
|🔸 Type of format||Spreadsheet||Spreadsheet|
|🔸 Description||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 Office Open XML file formats are file formats that can be used to represent electronic office documents. There are formats for word processing documents, spreadsheets, presentations, and specific formats for material such as mathematical formulae, graphics, bibliographies, etc.|
|🔸 Technical details||OpenOffice.org has created documentation of the Excel format. Since then, Microsoft has made the Excel binary format specification available to download freely.||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 document, the packages have different internal directory structures and names.|
|🔸 File conversion||XLS conversion||XLSX conversion|
|🔸 Associated programs||Microsoft Office, LibreOffice, Kingsoft Office, Google Docs.||Microsoft Office, LibreOffice, Kingsoft Office, Google Docs.|
XLS to XLSX Conversion Quality Rating
4.6 (1408 votes)Convert and download at least one file to rate.