XLSX to EXCEL

Convert XLSX to EXCEL online for free

1: Choose multiple local XLSX files or enter the URL of an online XLSX file. 2: Choose "EXCEL" as target format and set options (optional). 3: Click the "START CONVERSION" button to convert XLSX files to EXCEL online.

Choose files or enter remote file URL

Set conversion options (optional)

# OUTPUT FILES FILE SIZE DOWNLOAD

XLSX

Office Open XML Document

File extension: .xlsx, .xlsm

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.

EXCEL

Microsoft Excel Binary File Format

File extension: .xls

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".