CSV is the universal plain-text format for tabular data — simple, portable, and supported by every data tool. However, it lacks any formatting, formulas, data types, or multi-sheet capability. ODS (OpenDocument Spreadsheet) is the ISO-standardized open spreadsheet format used by LibreOffice Calc, Apache OpenOffice, Google Sheets, and other open-source office suites. Unlike proprietary formats, ODS is an international standard (ISO/IEC 26300) guaranteed to remain readable by future software.

Many European government agencies, public institutions, and organizations with digital sovereignty requirements mandate ODS over proprietary formats like XLSX. The European Commission, several EU member states, and numerous public procurement frameworks require document submissions in OpenDocument format. Converting CSV data exports to ODS ensures compliance with these mandates while providing full spreadsheet functionality.

ODS files work seamlessly in LibreOffice Calc (free and open-source), Google Sheets (web-based), and can also be opened in Microsoft Excel. For teams using LibreOffice as their primary office suite, ODS is the native format that preserves all features — formulas, formatting, charts, macros — without the compatibility issues that sometimes arise when LibreOffice saves to XLSX format.

LibreOffice imports the CSV data using its text import engine, parsing delimiters, detecting encoding, and applying column type inference. The data is then saved in ODS format — a ZIP archive containing XML files conforming to the OpenDocument standard (ISO/IEC 26300). The content.xml file stores cell values with proper type annotations (float, date, string, percentage). Cell references use the OpenDocument formula syntax. The styles.xml file contains any auto-applied formatting. The resulting ODS file can be opened by LibreOffice Calc, Apache OpenOffice Calc, Google Sheets, Gnumeric, and Microsoft Excel 2007+.

Yes. Microsoft Excel 2007 and later can open ODS files directly. Some advanced ODS features (macros, complex formatting) may have minor compatibility differences, but basic data, formatting, and formulas work correctly.

No. ODS is the ISO-standardized OpenDocument format used by LibreOffice, while XLSX is Microsoft's Office Open XML format. Both store spreadsheet data in ZIP-compressed XML, but they use different schemas and feature sets.

Yes. Google Sheets can import and export ODS files natively. You can upload an ODS file to Google Drive and edit it directly in Google Sheets.

Fields containing commas should be enclosed in double quotes in the CSV (per RFC 4180). The converter correctly handles quoted fields, preserving the commas as part of the cell value in the ODS output.

Yes. The ODS output is a fully functional spreadsheet. You can open it in LibreOffice Calc or Google Sheets and add formulas, charts, conditional formatting, pivot tables, and all other spreadsheet features.

Device	CSV	ODS
Windows PC	Partial	Partial
macOS	Partial	Partial
iPhone/iPad	Partial	Partial
Android	Partial	Partial
Linux	Partial	Partial
Web Browser	No	No

Egenskap	CSV	ODS
Fullt navn	Comma-Separated Values	OpenDocument Spreadsheet
Filendelse	.csv	.ods
Best egnet for	Simple format	Open standard

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