ChangeMyFile - Free Online File Converter

ChangeMyFile

XLSX to XLS Free Online Converter

Fast, Free, Secure & Simple

Looking for the easiest way to convert your Excel files? Change My File offers the best XLSX to XLS converter to convert XLSX to XLS online for free with just a few clicks. Whether you're using an older version of Excel or need to share your spreadsheet in the .xls format, our tool is quick, reliable, and completely free.

Why Use Our XLSX to XLS Converter?

Simple & Instant Conversion

Upload your XLSX file and get your XLS file converted instantly—no sign-up, no hassle.

100% Free Online Excel Converter

Enjoy full access to our tool with no fees, no hidden charges—ever.

Secure & Private

Your Excel files are never stored or shared. We care about your privacy.

Works on All Devices

Whether you're on a Windows PC, Mac, tablet, or phone, convert files directly from your browser.

How to Convert XLSX to XLS Online for Free?

  1. Click the Upload XLSX File button.
  2. Select the file from your device.
  3. Wait a moment while we convert your file.
  4. Download the converted .xls file instantly.

It's that simple!

What is the Difference Between XLSX and XLS?

  1. XLSX is the modern Excel format introduced in Excel 2007, based on XML.
  2. XLS is the older Excel format used in Excel 97-2003.
  3. Need to share your spreadsheet with users of older Excel versions? Our XLSX to XLS online converter ensures full compatibility.

Top Features of Our Free Excel Converter Tool

  1. Convert large XLSX files to XLS effortlessly
  2. Preserve original formatting and data accuracy
  3. No software download required
  4. Unlimited conversions
  5. Works with Excel 365, Excel 2019, Excel 2016, Excel 2013, and earlier

Frequently Asked Questions

Is this XLSX to XLS converter really free?

Yes! You can convert any number of Excel files without paying a cent.

Can I convert files on mobile?

Absolutely. Our online Excel converter works perfectly on mobile devices and tablets.

Do I need to install anything?

No downloads needed. Use our Excel file converter online in your browser.

Convert XLSX to XLS Online Now – Free & Easy

Don't waste time with complicated software. Use Change My File, the best online XLSX to XLS converter, and enjoy fast, secure, and 100% free file conversion.

XLSX Technical Specifications

File extension.xlsx
File categoryDocument file
Stands forMicrosoft Excel Open XML Spreadsheet
DeveloperMicrosoft
OverviewAn XLSX is one of the components of Microsoft’s office suite and it is popularly known as Excel or spreadsheet. It is compatible with Windows, Android and iOS. It stores the data in worksheets and each worksheet comprises of a number of cells (boxes) that are organized in a grid of columns and rows. These cells in actual store the data and every cell has its own identity (numbered row and letter named column). This identification of each cell is used to write formulae and to perform other arithmetical operations. They can also refer to other cells to get the values. The data can be formatted in this the same way, as we do in Microsoft word. It may also contain charts, histograms and line graphs; etc and these can be displayed using three-dimensional graphics. Boxes can be auto-filled by just dragging and expanding the selection box which one wants to copy.
Technical descriptionIt is the successor to XLS as this predecessor only stores data using a single binary file whereas XLSX uses Open XML format in which files and folders are stored separately under a ZIP compression. The graphs that are generated can be attached to the current sheet or can be added to the different sheet. Besides this, there are some add-ins which can be used in Excel sheets. It includes, Analysis ToolPak for Statistical and Engineering data analysis), Analysis ToolPak VBA (Visual basics of the application comes into act here), Euro Currency Tools (To convert and format Euro) and Solver Add-in (for optimization and equation solving). Furthermore, including Version 12.0 and later ones, can have 1048576 rows and 16384 columns.
Links

XLS Technical Specifications

File extension.xls
File categoryTest
Stands forTest
DeveloperTest
OverviewTest
Technical descriptionTest
Links

XLSX To Other Extensions

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