Convert XLSX to HTML Online

CONVERT XLSX to HTML ONLINE

1) Upload XLSX file to convert

Drop files here, or Click to select

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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 XLSX to HTML options

3) Get converted file

DOWNLOAD CONVERTED FILE

Full version

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

Convert Excel Files in Batch!;
Convert XLSX 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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Total Excel Converter

Total 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.

With Total Excel Converter you can convert Excel to PDF and add a digital signature in one go.

Total Excel Converter can convert each page of your spreadsheet into a separate file.

Tell Total Excel Converter to copy original time stamps if you don't want to change the date.

Have an outdated Microsoft Office 2003? Update all your old files to the new format in one go. Convert XLS files to XLSX in batches.

Total Excel Converter will help you to convert Excel 2003 XML Files (rare option!)

Total 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.

Convert Excel spread sheets via our most straightforward interface.

The 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!

Total Excel Converter can combine several Excel spread sheets into one TIFF or PDF file.

Want to quickly find a file? Total Excel Converter helps you to preview any document you select.

Add your logo or any other image to the header or the footer of the output file.

Want more order? Add page counters or a date to every page of the output files. Sequential numbering of several folders is avaialble.

Total Excel Converter can copy original time stamps if you want to keep them.

When 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.

Total Excel Converter can be run via command line (get the ready-to-use command line from GUI).

How to convert XLSX to HTML?

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

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

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

Cloud Based

There is no need to install any software to convert XLSX to HTML with CoolUtils. Simply access the internet, and you can easily convert your file online with our service.

Secure

Our hardware operates in top-tier, highly secure data centers equipped with advanced electronic surveillance and multi-factor access control systems.

Ease of Use

Converting XLSX to HTML online has never been so simple. Drop your Excel workbook and the converter renders each worksheet as a structured HTML table — cell values, headers, and formatting mapped to standard markup ready to paste into any web page or CMS. No Excel installation required.

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.

XLSX File

File extension	.XLSX, .EXCEL
Category	Document File
Description	XLSX is a format from Office Open XML family, a native MS Excel file type starting from version 2007. As opposite to XLS, this format uses ZIP compression that makes XLSX files smaller in size. Actually XLSX file is an archive of XML-documents. The cells in XLSX table can contain plain text, formulas or graphic elements. XLSX can be read in MS Office 2007 and later, Universal Viewer, OpenOffice, MS Office Excel Viewer, Corel WordPerfect Office. This format doesn’t support macros.
Associated programs	Microsoft Excel 2007 OpenOffice OxygenOffice Progessional (Linux)
Developed by	Microsoft
MIME type
Useful links	More detailed information on XLSX files
Conversion type	XLSX to HTML

HTML File

File extension	.HTML
Category	Document File
Description	HTML 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 programs	Any Web Browser (e.g. Internet Explorer, Safari, Firefox, Google Chrome)
Developed by	World Wide Web Consortium & WHATWG
MIME type	text/html
Useful links	More detailed information on HTML files

2026-03-16

I maintain a company intranet and convert Excel pricing tables to HTML weekly — the output is clean enough to paste directly into our CMS without stripping inline styles manually.

Pieter van den Berg

2026-05-09

Our financial models live in XLSX and we need to publish quarterly summaries on the website; converting to HTML preserves the merged cells and number formatting so the web version matches the source exactly.

Amara Diallo

2026-02-24

Converting an Excel product catalogue to an HTML table let us import it into our shop CMS without re-typing 300 rows — the converter kept column headers as <th> elements, which the CMS importer required.

Jakub Wróbel

Rating XLSX to HTML

4.7 (610 votes)Rate It

XLSX to HTML Converter — Frequently Asked Questions ▼

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

One HTML file per worksheet. A workbook with 4 sheets produces 4 HTML files, each containing a separate <table> element with the data from that worksheet. They are packaged in a ZIP archive for download. A single-sheet workbook downloads as a single HTML file directly.

Are Excel formulas preserved in the HTML output?

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

Does the converter preserve conditional formatting colors in the HTML output?

Yes. Conditional formatting rules are evaluated against the cell data, and the resulting visual formatting — colored cell backgrounds, text colors — is rendered as inline CSS styles in the HTML output. The table reflects the spreadsheet's visual appearance as it would appear in Excel with conditional formatting applied.

Are charts and graphs from the XLSX included in the HTML output?

Charts embedded in worksheets are not converted to HTML chart elements — they are rendered as static images and embedded in the HTML output as <img> elements. Cell data and table structure are the primary output; charts appear as visual elements within the page.

Can I paste the HTML output directly into WordPress or another CMS?

Yes. The HTML table output can be pasted directly into any CMS HTML editor. The <table> markup is standard and compatible with WordPress, Drupal, SharePoint, Confluence, and other platforms. You may want to add Bootstrap or custom CSS classes to match your site's table styling.

My spreadsheet has thousands of rows — will all rows be included in the HTML output?

Yes. All rows are included in the HTML output — there is no row limit. For very large spreadsheets, the resulting HTML table may be very long. Consider applying pagination via JavaScript (DataTables, for example) after conversion if browser performance is a concern for large datasets.

I need to convert 500 XLSX reports to HTML daily for a web portal — is automation possible?

Total Excel Converter (Windows, $29.90) converts XLSX to HTML in batch from the command line and integrates with Windows Scheduler: `TotalExcelConverter.exe C:\reports C:\html_output /ConvertTo html /ProcessRecursively`. CSS class injection and output filename patterns are configurable for portal integration workflows.

Convert XLSX to HTML Online — Excel Spreadsheets to Web-Ready HTML Tables

Publishing spreadsheet data to the web means converting Excel to HTML — structured, browser-readable tables that display in any web page without requiring Excel. The converter renders each worksheet as an HTML table, preserving column headers, cell values, and basic formatting. No Microsoft Excel installation required. Drop your .xlsx file and get web-ready HTML output in seconds.

What Is an XLSX File?

XLSX (Office Open XML Spreadsheet) is the standard Excel format since Office 2007, ISO-standardized as ISO 29500. Internally a ZIP archive containing XML worksheets, XLSX stores data in rows and columns with support for formulas, conditional formatting, charts, and pivot tables. XLSX is the native format of Microsoft Excel, Google Sheets, and LibreOffice Calc — but it requires a spreadsheet application to view. To display XLSX data on a public website or in a web application, conversion to HTML is required.

What Is an HTML File?

HTML (HyperText Markup Language) is the standard markup language for web pages, readable by every browser on every device. When spreadsheet data is converted to HTML, it becomes a <table> structure with <thead>, <tbody>, <tr>, and <td> elements — fully embeddable in any web page. HTML tables are indexed by search engines, responsive to CSS styling, and accessible to screen readers. No plugin, viewer application, or file download is required to display the data.

XLSX vs HTML — Use Case Comparison

Property	XLSX	HTML
Browser viewable	No — requires Excel or plugin	Yes — any browser, any device
Embeddable in web pages	No	Yes — inline table element
Search engine indexed	Limited	Yes — full text indexing
Formulas preserved	Yes — live formulas	Values only (no formulas)
CSS styling	No	Yes — full CSS control
Requires download	Yes	No — renders in browser
CMS / portal integration	Not directly	Direct paste into HTML editor

How to Convert XLSX to HTML Online

Click Choose File or drag your .xlsx file into the upload area above.
The converter unpacks the Office Open XML container and reads each worksheet's cell data and headers.
Each worksheet is rendered as an HTML <table> with properly structured header and data rows.
Cell values, text formatting, and column structure are preserved in the output markup.
Click Download to save the .html file and paste the table code into your web page or CMS.

When Do You Need XLSX to HTML Conversion?

Publishing data reports online: Financial reports, statistics, and data tables created in Excel need to be embedded in web pages without requiring visitors to download files.
CMS content management: WordPress, Drupal, and other CMS platforms accept HTML table code directly — XLSX content becomes embeddable page content.
Email newsletters: HTML tables render correctly in email clients; XLSX attachments do not display inline.
Intranet portals: Sharing pricing lists, schedules, and reference tables as inline HTML rather than downloadable spreadsheets improves accessibility.
Web scraping and data pipelines: Converting XLSX data to HTML enables downstream processing by tools that parse web table formats.

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