Convert XLSX to HTML
Convert XLSX files to HTML locally, completely free and with maximum privacy.
Drag and drop your files here
or click to browse local files (large files supported, limited only by browser RAM)
Upload FilesPlatform Statistics
How to convert XLSX to HTML
- Drop your .xlsx files above, or click Upload Files. You can add many files at once.
- HTML is already selected as the output. Open the settings (gear icon) to fine-tune the result.
- Click Convert All. SheetJS runs inside your browser through WebAssembly; nothing is uploaded.
- Download your .html files as soon as each one finishes.
What to know about XLSX to HTML conversion
- HTML holds a single table: convert the active sheet only, or all sheets at once (as one HTML page with a table per sheet).
- Cell values are exported as they were last calculated; formulas, formatting and charts are not part of the output.
- HTML is best for publishing tables on web pages and in emails, and opens in every browser and email client.
XLSX vs HTML
| Feature | XLSX (Excel Workbook) | HTML (HTML Table) |
|---|---|---|
| Multiple sheets | Yes | No |
| Formulas and formatting | Yes | No |
| Best for | everyday spreadsheets shared with Excel users | publishing tables on web pages and in emails |
| Opens in | Excel, Google Sheets, LibreOffice and Numbers | every browser and email client |
XLSX (Excel Workbook): The default Microsoft Excel workbook format since Office 2007, based on Office Open XML.
HTML (HTML Table): Tabular data as an HTML table, ready to embed in web pages or emails.
Conversion options
- Active sheet only or all sheets
- Custom output file name
Frequently asked questions
Is it safe to convert XLSX to HTML here?
Yes. Your files are processed entirely on your own device by WebAssembly code running in the browser. They are never uploaded, so nobody else can see them, and the converter keeps working even if your connection drops after the page loads.
Is there a file size limit?
There is no server-side limit. The only limit is the memory available to your browser, typically 1.5–4 GB on desktop computers.
Can I convert several XLSX files at once?
Yes. Add as many files as you like; they are converted in parallel according to your device's CPU cores, and you can apply the same settings to all of them.
Related conversions
Need the opposite? Convert HTML to XLSX.
Convert XLSX to other formats
Convert other formats to HTML
See every XLSX converter and HTML converter, or browse the full converter directory.