Convert XLSX to OTS Online
XLSX files are the modern Excel workbook format. Converting to OTS gives you OTS workflows.
How to convert XLSX to OTS
- Upload your XLSX file. Drag it onto the box above or click to browse. Files up to 200 MB are accepted.
- Choose OTS 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 XLSX to OTS?
People convert XLSX to OTS mainly for compatibility. Supported by Excel, Google Sheets and LibreOffice. OTS, by contrast, is built for OTS workflows, and support for OTS depends on the application you use.
XLSX vs OTS: key differences
| XLSX | OTS | |
|---|---|---|
| File type | editable | file format |
| Typical use | data analysis, budgets, reporting | OTS workflows |
| Compatibility | Supported by Excel, Google Sheets and LibreOffice. | Support for OTS depends on the application you use. |
Tips for a clean XLSX to OTS conversion
- Supported by Excel, Google Sheets and LibreOffice.
- Use the highest-quality source XLSX 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 XLSX until you have checked the converted OTS opens the way you expect.
Frequently asked questions
How do I convert XLSX to OTS?
Upload your XLSX file to the converter on this page, make sure OTS is selected as the output format and click “Convert now”. When the conversion finishes the download starts automatically.
Is this XLSX to OTS 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 XLSX to OTS reduce quality?
OTS uses its own compression, so the converted file is re-encoded. Quality loss is minimal at sensible settings, but keep the original XLSX if you may need to convert again later.
What is a XLSX file?
XLSX is the modern Excel workbook format. Its technical name is Office Open XML Spreadsheet and it is typically used for data analysis, budgets, reporting.
What is a OTS file?
OTS is a OTS file, handled by the converthubor conversion engine. Its technical name is OTS and it is typically used for OTS workflows.
Can I convert XLSX to OTS 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.