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Convert XLS to HTML Online


CONVERT XLS to HTML ONLINE

1) Upload XLS file to convert

 

Drop files here, or Click to select
0 %

Allowed file types: fasta, qif, ofx, iif, srt, ics, excel, ris, bib, ods, xls, xlsx, xlsm, csv, tsv, tab, xlsb, xltx, xlr, pxl, qpw, wb3, wq1, dbf, wk3, 123, mdb, evtx, pages, numbers, sqlite

2) Set converting XLS to HTML options

Convert to

 

Options

Header:
Footer:

3) Get converted file

DOWNLOAD CONVERTED FILE
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Get Total Excel Converter to convert XLS, XLSX, ODT, XLSM, etc. safely.

Excel Converter To Convert Spreadsheets
  • Convert Excel Files in Batch!;
  • Convert XLS to HTML and in many other formats
  • Convert hundreds of spreadsheets in 3 clicks;
  • Both MS Office and OpenOffice files;
  • Have a desktop converter that works without Internet;
  • Keep your files safe, don't send them to the web;
  • Get more accurate results with the more poweful engine.
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close Total Excel Converter
okTotal Excel Converter supports almost all Excel extensions: XLS, XLSX, XLSM, XLSB, XLT, XLTM, XLTX, XLK, XLW. When the new Office is released, we will add new file types too.
okWith Total Excel Converter you can convert Excel to PDF and add a digital signature in one go.
okTotal Excel Converter can convert each page of your spreadsheet into a separate file.
okTell Total Excel Converter to copy original time stamps if you don't want to change the date.
okHave an outdated Microsoft Office 2003? Update all your old files to the new format in one go. Convert XLS files to XLSX in batches.
okTotal Excel Converter will help you to convert Excel 2003 XML Files (rare option!)
okTotal Excel Converter has a built-in renamer to give your files new descriptive names. Include a counter, a date or worksheet name into the file name and your files will be in perfect order.
okConvert Excel spread sheets via our most straightforward interface.
okThe widest list of output file types: DOC, PDF, HTML, MHT, XHTML, CSV, TXT, TIFF, JPEG, SVG, RTF, XML, XLS, XLSX, ODS, ODT, Lotus, DIFF, SYLK, LATEX, SQL, DBF, Access!
okTotal Excel Converter can combine several Excel spread sheets into one TIFF or PDF file.
okWant to quickly find a file? Total Excel Converter helps you to preview any document you select.
okAdd your logo or any other image to the header or the footer of the output file.
okWant more order? Add page counters or a date to every page of the output files. Sequential numbering of several folders is avaialble.
okTotal Excel Converter can copy original time stamps if you want to keep them.
okWhen you convert Excel to PDF you can set user permissions, password-protect your files or sign with a digital signature. Get PDF, PDF/A and non-searchable PDFs.
okTotal Excel Converter can be run via command line (get the ready-to-use command line from GUI).

How to convert XLS to HTML?

1

💾 Upload Your File: Go to the site, click on «Upload File,» and select your XLS file.

2

✍️ Set Conversion Options: Choose HTML as the output format and adjust any additional options if needed.

3

Convert and Download: Click 👉«Download Converted File»👈 to get your HTML file.

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Cloud Based
There is no need to install any software to convert XLS to HTML with CoolUtils. Simply access the internet, and you can easily convert your file online with our service.
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Secure
Our hardware operates in top-tier, highly secure data centers equipped with advanced electronic surveillance and multi-factor access control systems.
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Ease of Use
Converting XLS to HTML online has never been so simple. Drop your legacy Excel spreadsheet and the converter renders each worksheet as a structured HTML table — cell values and formatting mapped to standard markup ready for any browser or CMS. No Excel installation required.
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Privacy
We understand the importance of privacy, which is why we've developed a comprehensive privacy policy detailing how we handle your files and personal information. You can read the policy here.

 

XLS File

File extension .XLS
CategoryDocument File
DescriptionXLS is the most popular format for storing table data. It is native Microsoft Excel format with data stored in numbered cells that form columns and rows. The top line and left column of each table contains numbering of each cell that can contain either static or dynamic data that is calculated from formulas. XLS features powerful calculation and charts-building options, as well as rich text formatting. XLS is compatible with numerous table editors such as Calc, PlanMaker, OpenOffice, etc.
Associated programsMicrosoft Excel
Microsoft Excel Viewer
OpenOffice
Developed byMicrosoft
MIME typeapplication/vnd.ms-excel
Useful linksMore detailed information on XLS files
Conversion typeXLS to HTML

HTML File

File extension .HTML
CategoryDocument File
DescriptionHTML allows creating structured documents and web pages. HTML file contains command tags in angular brackets that mark out each element like title, paragraphs, quotes, links, lists, etc. Web-pages generated with HTML have .html extension (for a static web-page). HTML code is processed by a browser, while user sees only the text and other elements of the page without any tags. The source code can be viewed separately. HTML files can be edited in a common text editor like a TXT file.
Associated programsAny Web Browser (e.g. Internet Explorer, Safari, Firefox, Google Chrome)
Developed byWorld Wide Web Consortium & WHATWG
MIME typetext/html
Useful linksMore detailed information on HTML files
5 star2026-01-31
I manage a product catalogue stored in XLS files from the early 2000s and needed to publish it on our website — the converter turned each sheet into an HTML table that our CMS could import directly.
Takeshi Mori
4 star2026-04-10
Old XLS financial summaries needed to go on a client portal as web pages; the HTML output kept cell borders and background colors from the original spreadsheet, so the tables looked presentable without extra CSS work.
Brigitte Müller
5 star2026-03-05
We archive legacy XLS reports by converting them to HTML for our document management system — the output is self-contained and renders correctly in any browser without requiring Excel to be installed.
Oluwaseun Adeyemi

Rating XLS to HTML   5 star XLS to HTML   4.6 (390 votes)
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XLS to HTML Converter — Frequently Asked Questions ▼

How many HTML files are produced from a multi-sheet XLS workbook?

One HTML file per worksheet. A workbook with 3 sheets produces 3 HTML files, each containing a <table> element with the data from that worksheet, packaged in a ZIP archive. A single-sheet workbook downloads as a single HTML file directly.

Are Excel formulas in XLS files preserved in the HTML output?

No. HTML output contains the last calculated values of cells, not the underlying formulas. Formulas are evaluated and the resulting values appear in the HTML table cells. Live formula logic requires a spreadsheet application and cannot be represented in static HTML.

Does the converter handle the legacy XLS binary format without requiring Excel?

Yes. The converter reads the XLS binary BIFF format directly without requiring Microsoft Excel to be installed. The conversion runs entirely on the server side — you upload the .xls file and receive HTML output.

Are cell colors and formatting from the XLS file preserved in the HTML output?

Cell background colors, text colors, and basic formatting (bold, italic) are preserved as inline CSS styles in the HTML table. Complex Excel formatting (conditional formatting, gradients, custom number formats) may be rendered as the visual result rather than the dynamic format rule.

Can I embed the HTML output directly in a web page or CMS?

Yes. The <table> markup in the HTML output is standard and embeds directly in any web page HTML or CMS editor (WordPress, Drupal, SharePoint). You may add Bootstrap table classes or custom CSS to match your site styling. The data structure and cell values are preserved.

My XLS file has merged cells — are they handled correctly in the HTML output?

Merged cells in XLS are converted to <td> elements with colspan and rowspan attributes in the HTML output. The content of the merged cell is placed in the spanning element, and the covered cells are omitted. Complex nested merges may require minor cleanup in the resulting HTML.

I need to publish hundreds of XLS legacy reports as HTML pages on a portal — is there a desktop tool?

Total Excel Converter (Windows, $29.90) converts XLS to HTML in batch from the command line: `TotalExcelConverter.exe C:\xls_reports C:\html_output /ConvertTo html /ProcessRecursively`. Output can be integrated with Windows Scheduler for automated daily portal updates from legacy XLS report archives.
 

 

Convert XLS to HTML Online — Legacy Excel Spreadsheets to Web-Ready HTML Tables

XLS files contain data that belongs on the web — but browsers cannot read the binary Excel format. Converting XLS to HTML produces structured <table> markup that renders in any browser without requiring Excel or any spreadsheet application. The converter reads the binary XLS format directly and outputs clean HTML tables preserving cell values, headers, and structure. Drop your .xls file and get browser-ready HTML output in seconds.

What Is an XLS File?

XLS is the legacy binary Excel file format used by Microsoft Excel 97 through 2003. Stored as a BIFF (Binary Interchange File Format) compound document, XLS files contain spreadsheet data, formulas, charts, and formatting encoded in a proprietary binary structure. XLS predates the modern XLSX open standard and cannot be opened natively by browsers. Despite being superseded by XLSX, millions of XLS files remain in legacy archives, financial systems, and older applications — converting their data to HTML makes it accessible without Excel.

What Is an HTML File?

HTML (HyperText Markup Language) is the standard markup language for web pages. When spreadsheet data is converted to HTML, it becomes a <table> structure with <thead>, <tbody>, <tr>, and <td> elements. This markup renders correctly in every browser on every device — no plugins, no downloads, no compatibility issues. HTML tables are indexed by search engines, responsive to CSS styling, and directly embeddable in any web page, CMS, or email template. The data becomes universally accessible the moment it reaches HTML format.

XLS vs HTML — Use Case Comparison

PropertyXLSHTML
Browser viewableNo — requires Excel or compatible appYes — any browser, any device
Embeddable in web pagesNoYes — inline table element
Search engine indexedNoYes — full text indexing
Formulas preservedYes — live formulasValues only (no live formulas)
CSS stylingNoYes — full CSS control
File format ageLegacy (pre-2007 binary)Current web standard
Mobile readableRequires appNative mobile browser support

How to Convert XLS to HTML Online

  1. Click Choose File or drag your .xls file into the upload area above.
  2. The converter reads the binary BIFF structure and extracts cell data, headers, and sheet layout from the XLS compound document.
  3. Each worksheet is rendered as an HTML <table> with properly structured header and data rows.
  4. Cell values, text formatting, and column structure are preserved in the output markup.
  5. Click Download to save the .html file and embed the table code into your web page, CMS, or email.

When Do You Need XLS to HTML Conversion?

Feature Online Converters CoolUtils Desktop Excel Built-in Other Software
Batch Conversion Limited ✅ Unlimited Manual only Limited
File Size Limit 1-5MB ✅ No limits System dependent Varies
Privacy & Security Upload required ✅ 100% offline ✅ Local only Varies
Conversion Speed Internet dependent ✅ Fast local processing Slow Medium
Advanced Options Basic ✅ Full customization Limited Basic
Cost Free/Premium One-time purchase Requires Office Subscription
Formatting Preservation Good ✅ Excellent Good Varies
Multiple Formats Support Limited ✅ 40+ formats Few formats Limited

Convert from XLS

Using CoolUtils, it is possible to convert XLS files to a variety of other formats:

Convert to HTML

Using CoolUtils, it is possible to convert a variety of other formats to HTML files:

                                                                                                 

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