Convert XLS to ODS Online
Need ODS instead of XLS? This free converter changes XLS files into ODS in seconds, right in your browser.
How to convert XLS to ODS
- Upload your XLS file. Drag it onto the box above or click to browse. Files up to 200 MB are accepted.
- Choose ODS as the output. The target format is pre-selected on this page — just press “Convert now”.
- Download the result. Conversion runs on our own server and the download starts as soon as it is ready. Your files are deleted automatically.
Why convert XLS to ODS?
XLS is the legacy binary Excel spreadsheet format. ODS is the open-source spreadsheet format. That difference is exactly why converting between them is so common: ODS is the better choice for LibreOffice spreadsheets, open data.
XLS vs ODS: key differences
| XLS | ODS | |
|---|---|---|
| File type | legacy | open editable |
| Typical use | legacy spreadsheets | LibreOffice spreadsheets, open data |
| Compatibility | Superseded by XLSX. | Supported by LibreOffice and modern Excel. |
Tips for a clean XLS to ODS conversion
- Superseded by XLSX.
- Use the highest-quality source XLS you have — converting a compressed file again cannot restore lost detail.
- If you only need a smaller file, try a lower resolution or bitrate instead of a different format.
- Keep the original XLS until you have checked the converted ODS opens the way you expect.
Frequently asked questions
How do I convert XLS to ODS?
Upload your XLS file to the converter on this page, make sure ODS is selected as the output format and click “Convert now”. When the conversion finishes the download starts automatically.
Is this XLS to ODS converter free?
Yes — it is completely free and needs no account. Files up to 200 MB are accepted, and heavy use is rate-limited so the service stays available for everyone.
Will converting XLS to ODS reduce quality?
Because both formats preserve the original data, converting back and forth does not degrade quality.
What is a XLS file?
XLS is the legacy binary Excel spreadsheet format. Its technical name is Microsoft Excel 97-2003 and it is typically used for legacy spreadsheets.
What is a ODS file?
ODS is the open-source spreadsheet format. Its technical name is OpenDocument Spreadsheet and it is typically used for LibreOffice spreadsheets, open data.
Can I convert XLS to ODS on my phone?
Yes. The converter runs in the browser on Android, iOS, Windows, macOS and Linux — no app installation is required.
Are my files kept on the server?
No. Uploaded files and converted results are deleted automatically a short time after the conversion finishes.