Online XLSX Converter

Select files for conversion or drag and drop them to the upload area.
Your files are securely protected and available only to you.
All files are automatically deleted from our servers after 1 hour.

Information about XLSX file format

Name XLSX
Full name XLSX - Office Open XML Document
File extension .xlsx, .xlsm
MIME type application/vnd.-openxmlformats-officedocument.-spreadsheetml.-sheet
Developed by Microsoft
Type of format Spreadsheet
Description 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 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.
Associated programs Microsoft Office, LibreOffice, Kingsoft Office, Google Docs.
Wiki https://en.wikipedia.org/wiki/Office_Open_XML_file_formats

FAQ

    👍 What is the best XLSX converter?
    AnyConv. Our XLSX converter is fast, free and does not require software installation.
    🔺 How to convert Document files to XLSX?
    Choose files and upload them on the page. Select "to XLSX" and click "Convert". After a few seconds, you can download XLSX files.
    🔻 How do i change XLSX to another format?
    Upload your XLSX-file on the page. Select target format and click "Convert". XLSX conversion takes a few seconds.
    📱 Can I use XLSX converter on iPhone or iPad?
    Yes, you can convert XLSX files from iPhone, iPad and other mobile devices, because AnyConv XLSX Converter is a multi-platform web service.