# Convert XLS to HTML

> Convert XLS 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/xls-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), [XLS converter](https://www.converterrr.com/xls-converter).

## How to convert XLS to HTML

1. **Add your XLS files.** Drag and drop XLS 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

- XLS files are typically used for older Excel workbooks, 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.

## XLS vs HTML

|  | XLS | HTML |
| --- | --- | --- |
| Full name | Microsoft Excel 97–2003 | HyperText Markup Language |
| Type | Spreadsheet | Document |
| Extensions | .xls | .html, .htm, .xhtml |
| MIME type | application/vnd.ms-excel | text/html |
| Best for | older Excel workbooks | web pages and email templates |
| Properties | legacy format, proprietary | plain-text markup, open standard |

**XLS:** XLS is the legacy binary Excel format used before 2007.

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

## Related conversions

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

## Convert XLS to other formats

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

## XLS to HTML: frequently asked questions

### How do I convert XLS to HTML?

Drop your XLS 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 XLS 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 XLS 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 XLS to HTML reduce quality?

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

### Can I convert multiple XLS 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.