Convert CSV to ODS — Free Online Converter
Convert Comma-Separated Values (.csv) to OpenDocument Spreadsheet (.ods) online for free. Fast, secure document conversion with no watermarks or registration.
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How to Convert
Upload your .csv file by dragging it into the upload area or clicking to browse.
Choose your output settings. The default settings work great for most files.
Click Convert and download your .ods file when it's ready.
About CSV to ODS Conversion
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.
Converting CSV to ODS gives your raw data the structure and features of a full spreadsheet application without locking it into a proprietary format. This is particularly important for government agencies, educational institutions, and organizations with open-format mandates that prohibit proprietary file formats.
Why Convert CSV to ODS?
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.
Common Use Cases
- Convert government open data CSV releases into ODS for analysis in LibreOffice by public sector workers
- Transform database exports into ODS format for organizations with open-format compliance requirements
- Import CSV financial data into ODS spreadsheets for analysis in Google Sheets or LibreOffice Calc
- Convert research datasets from CSV to ODS for academic institutions that mandate open document standards
- Prepare CSV product catalogs as ODS files for suppliers using LibreOffice-based procurement systems
How It Works
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+.
Quality & Performance
All CSV data transfers with full fidelity to ODS — every cell value, row, and column is preserved exactly. Numeric values are typed as float or currency, dates are stored as native ODS date values, and text fields retain their content including Unicode characters. The ODS format supports up to 1,048,576 rows and 1,024 columns per sheet, matching Excel's capacity. Empty cells and trailing whitespace in the CSV are preserved as-is.
Device Compatibility
| Device | CSV | ODS |
|---|---|---|
| Windows PC | Partial | Partial |
| macOS | Partial | Partial |
| iPhone/iPad | Partial | Partial |
| Android | Partial | Partial |
| Linux | Partial | Partial |
| Web Browser | No |
Tips for Best Results
- 1Use UTF-8 encoding with BOM for your CSV files to ensure international characters convert correctly to ODS
- 2Include descriptive column headers in the first row of your CSV for a well-organized ODS spreadsheet
- 3Format dates consistently in your CSV (YYYY-MM-DD is safest) so they are correctly recognized as dates in ODS
- 4Check delimiter consistency — if your CSV uses semicolons (common in European locales), the auto-detection handles it
- 5After conversion, use LibreOffice Calc's AutoFormat feature to quickly apply professional table styling to the data
Related Conversions
CSV-to-ODS conversion produces a fully functional open-standard spreadsheet from raw data, ideal for organizations that require open document formats or use LibreOffice as their primary spreadsheet application.