# Convert XLSX to HTML

> Convert XLSX to HTML online for free in seconds. Files are processed in a secure, isolated sandbox and deleted automatically. No sign-up, no watermarks.

URL: https://www.converterrr.com/xlsx-to-html

- Runs in an isolated cloud sandbox with LibreOffice: files are deleted automatically, and the job uses cloud credits.
- Engines: LibreOffice (cloud).
- API: available. `POST /api/v1/jobs` with `"output_format": "html"` (paid plans).
- More: [Spreadsheet converter](https://www.converterrr.com/spreadsheet-converter), [XLSX converter](https://www.converterrr.com/xlsx-converter), [Compress XLSX](https://www.converterrr.com/compress-xlsx).

## How to convert XLSX to HTML

1. **Add your XLSX files.** Drag and drop XLSX files onto the converter, paste them, or click to browse. You can add several at once.
2. **Choose HTML.** HTML is already selected. Open Options if you want to change quality, size or metadata.
3. **Convert.** Click Convert. Files are processed in a secure cloud sandbox and are usually ready in seconds.
4. **Download your HTML.** Download each HTML file, or everything at once as a ZIP.

## Good to know

- XLSX files are typically used for spreadsheets in Excel, Google Sheets and Numbers, while HTML is best for web pages and email templates.
- This conversion runs on LibreOffice in an isolated cloud sandbox. Files are encrypted in transit and deleted automatically.

## XLSX vs HTML

|  | XLSX | HTML |
| --- | --- | --- |
| Full name | Microsoft Excel Workbook | HyperText Markup Language |
| Type | Spreadsheet | Document |
| Extensions | .xlsx | .html, .htm, .xhtml |
| MIME type | application/vnd.openxmlformats-officedocument.spreadsheetml.sheet | text/html |
| Best for | spreadsheets in Excel, Google Sheets and Numbers | web pages and email templates |
| Properties | open standard | plain-text markup, open standard |

**XLSX:** XLSX is the modern Excel workbook format with formulas, multiple sheets, charts and formatting.

**HTML:** HTML is the markup language of the web. Converting to HTML makes a document readable in any browser.

## Related conversions

- [XLSX to PDF](https://www.converterrr.com/xlsx-to-pdf) (cloud)
- [PDF to HTML](https://www.converterrr.com/pdf-to-html) (cloud)
- [XLSX to CSV](https://www.converterrr.com/xlsx-to-csv) (cloud)
- [DOCX to HTML](https://www.converterrr.com/docx-to-html) (in the browser)
- [EPUB to HTML](https://www.converterrr.com/epub-to-html) (in the browser)
- [XLSX to XLS](https://www.converterrr.com/xlsx-to-xls) (cloud)
- [CSV to HTML](https://www.converterrr.com/csv-to-html) (in the browser)
- [XLSX to ODS](https://www.converterrr.com/xlsx-to-ods) (cloud)
- [XLSX to TSV](https://www.converterrr.com/xlsx-to-tsv) (cloud)
- [TXT to HTML](https://www.converterrr.com/txt-to-html) (in the browser)
- [DOC to HTML](https://www.converterrr.com/doc-to-html) (cloud)
- [Markdown to HTML](https://www.converterrr.com/md-to-html) (in the browser)

## Convert XLSX to other formats

[XLSX to PDF](https://www.converterrr.com/xlsx-to-pdf), [XLSX to CSV](https://www.converterrr.com/xlsx-to-csv), [XLSX to XLS](https://www.converterrr.com/xlsx-to-xls), [XLSX to ODS](https://www.converterrr.com/xlsx-to-ods), [XLSX to TSV](https://www.converterrr.com/xlsx-to-tsv)

## Convert other formats to HTML

[PDF to HTML](https://www.converterrr.com/pdf-to-html), [DOCX to HTML](https://www.converterrr.com/docx-to-html), [EPUB to HTML](https://www.converterrr.com/epub-to-html), [CSV to HTML](https://www.converterrr.com/csv-to-html), [TXT to HTML](https://www.converterrr.com/txt-to-html), [DOC to HTML](https://www.converterrr.com/doc-to-html), [Markdown to HTML](https://www.converterrr.com/md-to-html), [XLS to HTML](https://www.converterrr.com/xls-to-html), [ODT to HTML](https://www.converterrr.com/odt-to-html), [RTF to HTML](https://www.converterrr.com/rtf-to-html), [LaTeX to HTML](https://www.converterrr.com/tex-to-html), [IPYNB to HTML](https://www.converterrr.com/ipynb-to-html), [Pages to HTML](https://www.converterrr.com/pages-to-html), [ODS to HTML](https://www.converterrr.com/ods-to-html), [FB2 to HTML](https://www.converterrr.com/fb2-to-html), [Numbers to HTML](https://www.converterrr.com/numbers-to-html), [TSV to HTML](https://www.converterrr.com/tsv-to-html), [reST to HTML](https://www.converterrr.com/rst-to-html), [Typst to HTML](https://www.converterrr.com/typ-to-html), [Org to HTML](https://www.converterrr.com/org-to-html), [WPD to HTML](https://www.converterrr.com/wpd-to-html), [MediaWiki to HTML](https://www.converterrr.com/wiki-to-html), [OPML to HTML](https://www.converterrr.com/opml-to-html), [DocBook to HTML](https://www.converterrr.com/docbook-to-html)

## XLSX to HTML: frequently asked questions

### How do I convert XLSX to HTML?

Drop your XLSX file onto the converter above, make sure HTML is selected, and click Convert. When it's done, download the HTML file — it usually takes a few seconds.

### Is it safe to convert XLSX to HTML here?

Yes. Your file is sent over an encrypted connection to an isolated sandbox that's created for your job only, then both the original and the result are deleted automatically.

### Is the XLSX to HTML converter free?

Yes. Cloud conversions like this one use credits, and you get free credits every day (3 without an account, 10 with a free account).

### Will converting XLSX to HTML reduce quality?

No — HTML preserves the content of your XLSX file as faithfully as the format allows.

### Can I convert multiple XLSX files at once?

Yes. Add up to 5 files at a time without an account, 10 with a free account and up to 500 on paid plans, then download them individually or as a single ZIP.