Convert XLSX to ODS
Convert XLSX files to ODS 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 ODS
- Drop your .xlsx files above, or click Upload Files. You can add many files at once.
- ODS 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 .ods files as soon as each one finishes.
What to know about XLSX to ODS conversion
- Cell values, formulas, number formats and sheet names carry over; cell styling (colors, fonts, borders), charts and macros are not preserved.
- ODS is best for LibreOffice and open-standard documents, and opens in LibreOffice, OpenOffice, Excel and Google Sheets.
XLSX vs ODS
| Feature | XLSX (Excel Workbook) | ODS (OpenDocument Spreadsheet) |
|---|---|---|
| Multiple sheets | Yes | Yes |
| Formulas and formatting | Yes | Yes |
| Best for | everyday spreadsheets shared with Excel users | LibreOffice and open-standard documents |
| Opens in | Excel, Google Sheets, LibreOffice and Numbers | LibreOffice, OpenOffice, Excel and Google Sheets |
XLSX (Excel Workbook): The default Microsoft Excel workbook format since Office 2007, based on Office Open XML.
ODS (OpenDocument Spreadsheet): The open standard spreadsheet format used by LibreOffice Calc and other office suites.
Conversion options
- Active sheet only or all sheets
- Custom output file name
Frequently asked questions
Is it safe to convert XLSX to ODS 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 ODS to XLSX.
Convert XLSX to other formats
Convert other formats to ODS
See every XLSX converter and ODS converter, or browse the full converter directory.