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Save to desired format: PDF, DOC, DOCX, XLSX, PPTX, TEX, HTML and others

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Convert XLS to XLSX for free

Create a single XLSX from XLS online. Easily convert XLS to XLSX without loosing any quality.

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OVERVIEW

Convert XLS files to XLSX format online

Our XLS convertor allows you to convert several XLS files to XLSX format online for free. Convert XLS or any other supported file formats. No third-party software installation is required. Web-based application is fast, robust, easy-to-use and absolutely free.

Convert multi-format files

Conveniently convert your multi-format documents including DOC, PDF, DOCX, PNG,JPG, HTML, TXT and many more.

Save to desired format

Save your documents to PDF, JPEG, HTML and many other supported formats.

Quick convert operation

Lightning fast convert operations for your selected documents.

Convert multiple files

Convert multiple documents with just a simple drag-and-drop you can convert your files within few seconds.

Convert image files

Ability to convert various popular image file formats easily.

Reorder files

Arrange and reorder the files as required.

Why Use Our Free Online XLS Conversion App?

Our XLS conversion tool offers fast, easy, and secure file conversions at no cost. Accessible from any device with an internet connection, it supports a wide range of formats and requires no installation or sign-up. Enjoy hassle-free conversions with instant results and peace of mind knowing your data is handled safely. Here is why you should choose our tool:

Cost-Free

Enjoy full access to our conversion tool without any hidden fees or subscription costs.

User-Friendly Interface

Navigate effortlessly with our intuitive design, making conversions quick and hassle-free.

Wide Range of Conversions

Convert various units, currencies, and formats easily. Whether its length, weight, temperature, or file types, we have got you covered.

Accuracy and Reliability

Trust in precise and dependable results, ensuring your conversions are always accurate.

Instant Results

Get immediate conversions with no need for downloading or installing additional software.

Accessible Anywhere

Use our app from any device with an internet connection, whether you are on a computer, tablet, or smartphone.

Regular Updates

Benefit from continuous improvements and updates to stay current with the latest conversion standards and features.

No Registration Required

Start converting right away without the need for creating an account or logging in.

Privacy Assurance

Your data is secure with us; we do not store personal information or conversion history.

Global Support

Our app supports multiple languages and regional formats, making it a versatile tool for users worldwide.

Related Blog & Articles

How to Convert Documents Online

Convert documents online by using a web-based tool to change file formats quickly and easily. Simply upload your document, choose the desired output format (like PDF, Word, or Excel), and initiate the conversion. Once completed, download the converted file to your device. Read More

How to Convert Image to Text using OCR Online

Convert images to text using online OCR (Optical Character Recognition) tools by uploading an image file (like JPG or PNG). The tool processes the image to extract text and converts it into an editable format, such as Word or plain text. Read More

How to Convert PDF to Text using OCR Online

Convert PDF to text using online OCR (Optical Character Recognition) tools by uploading your PDF file. The tool analyzes the document to extract text from images or scanned pages, converting it into an editable format like Word or plain text. Read More

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How it Works
HOW TO

How to convert XLS to XLSX

  • Upload XLS files to convert them online for free.
  • Specify the parameters and press the "CONVERT" button to convert XLS.
  • Download the converted XLSX to view instantly or send a link to email.
FAQS

How to convert Microsoft Excel and other files?

Just use our online conversion. It is fast, easy to use and entirely free. It is designed to quickly convert documents and images free for online.

We support a variety of document, web, e-book and image file formats, including PDF, DOC, DOCX, RTF, ODT, HTML, Markdown, PNG, JPG, TIFF, BMP, MOBI, CHM, WPS, TXT and many more.

You can convert up to 10 files simultaneously

Each file size should not exceed 10 MB.

At the end of the conversion process, you will get a download link. You can download the result immediately or send the link to your email.

All user files are stored on Aspose servers for 24 hours. After that time, they will be automatically deleted.

Aspose gives the highest importance and attention to security issues. Please be assured that your files are kept in secure storage servers and protected from any unauthorized access.

Converting multiple files may be time-consuming sometimes, as it involves data re-encoding and re-compressing.
FILE INFORMATION

Learn about different file formats

Indulge yourself into learning more about well-known document and image file formats.

File Information

Microsoft Excel Binary File Format

Files with XLS extension represent Excel Binary File Format. Such files can be created by Microsoft Excel as well as other similar spreadsheet programs such as OpenOffice Calc or Apple Numbers. File saved by Excel are known as Workbook where each workbook can have one or more worksheets. Data is stored and displayed to users in table format in worksheet and can span numeric values, text data, formulas, external data connections, images and charts.

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File Information

Microsoft Excel Open XML Spreadsheet

XLSX is well-known format for Microsoft Excel documents that was introduced by Microsoft with the release of Microsoft Office 2007. Based on structure organized according to the Open Packaging Conventions as outlined in Part 2 of the OOXML standard ECMA-376, the new format is a zip package that contains a number of XML files. The underlying structure and files can be examined by simply unzipping the .xlsx file.

Read More

MOST POPULAR

The most popular file formats to convert

We support a variety of document, web, e-book and image file formats, including PDF, DOC, DOCX, RTF, ODT, HTML, Markdown, PNG, JPG, TIFF, BMP, MOBI, CHM, WPS, TXT and many more.

Convert XLSX To XLS Convert XLSX To PDF Convert XLSX To PNG Convert XLSX To PPTX Convert XLSX To DOCX Convert XLSX To CSV Convert XLSX To HTML Convert XLSX To SVG Convert XLSX To XPS Convert XLS To XLSX Convert XLS To PDF Convert XLS To PNG Convert XLS To PPTX Convert XLS To DOCX Convert XLS To CSV Convert XLS To HTML Convert XLS To SVG Convert XLS To XPS Convert XLSB To GIF Convert XLSB To PDF
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The app runs on a device with a larger screen (minimum width of 320 pixels) aspect ratio.