XLSX to ODS Converter - Excel to OpenDocument Online

Convert Microsoft Excel spreadsheets (XLSX) to OpenDocument Spreadsheet (ODS) format for LibreOffice. No uploads, works in browser.

Drag & drop Excel file here

Supports .xlsx files

Select an Excel file to preview

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Security: Only process files from sources you trust. All processing happens locally in your browser.

Frequently Asked Questions

ODS (OpenDocument Spreadsheet) is an open standard format used by LibreOffice Calc, OpenOffice Calc, and other compatible applications.

No. All processing happens locally in your browser. Your files never leave your device.

Cell values and basic formatting are preserved. Complex Excel-specific formulas may need manual adjustment in LibreOffice.

ODS is an open standard ensuring long-term accessibility, free from vendor lock-in, and works with free software like LibreOffice.

Browser memory is the limiting factor. Excel files under 50MB convert quickly; larger files may need more processing time.

Yes. All worksheets from your Excel workbook are converted and included in the ODS output with their original names.

Basic formatting like column widths and number formats are preserved. Excel-specific features may require adjustment in LibreOffice.

Password-protected files must be unlocked in Excel first. The converter processes unprotected XLSX files only.

Charts, images, and embedded objects are not transferred. Only cell data, formulas (as values), and basic formatting are converted.

ODS files open in LibreOffice Calc, OpenOffice Calc, Google Sheets, and Microsoft Excel (with some feature limitations).