XLSX is the modern XML-based spreadsheet format used by Microsoft Excel for data analysis, calculations, and charting.
ODS (OpenDocument Spreadsheet) is the open standard spreadsheet format used by LibreOffice Calc and other free office software.
Reach for XLSX when your priority is spreadsheets, data analysis, calculations — its efficient compression makes sharing fast and storage minimal.
Reach for ODS when your priority is open spreadsheets, data organization — its uncompromising quality ensures every detail is preserved.
Convert XLSX files to ODS online for free. High-quality conversion with no registration required.
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.xlsx,.XLSX (max 100MB)
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XLSX (XLSX spreadsheets) - Spreadsheet format for data analysis and calculations. Best for spreadsheets, data analysis, calculations.
ODS (ODS spreadsheets) - OpenDocument Spreadsheet, open spreadsheets. Ideal for open spreadsheets, data organization.
Yes, GoConvertFile offers free conversion of XLSX to ODS for files up to 100MB. No registration required.
Most XLSX to ODS conversions complete within seconds for standard-sized files. Larger files may take longer depending on the conversion complexity.
ODS is ideal for open spreadsheets, data organization. OpenDocument Spreadsheet, open spreadsheets
No, converting XLSX to ODS does not cause additional quality loss — ODS uses lossless compression. However, any artifacts already present in the original XLSX file will persist in the ODS output.
ODS files are typically 2-5x larger than equivalent XLSX files because ODS preserves all pixel data. This is expected and necessary for lossless quality.
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