ODS to XLSX Converter
Move a LibreOffice or OpenOffice Calc spreadsheet into the Excel format without installing either program. Every sheet comes across with its data, ready for colleagues, clients and forms that ask for .xlsx.
Data Converter
or drop CSV, TSV, TXT … files here ·
Max 95 MB per file· Up to 20 files· Deleted after 30 minutes
Files are processed on our servers and deleted after 30 minutes.
Character that separates columns in CSV and text files, for both reading and writing. Auto detects it from the input and writes commas.
UTF-8 works for every language. Choose UTF-8 with BOM if Excel on Windows shows garbled accents or Asian characters when opening the CSV.
Excel, ODS and Numbers input: convert the first sheet only, or every sheet (one CSV per sheet in a ZIP, or one JSON key per sheet).
Name of the sheet tab in the new spreadsheet, up to 31 characters.
Array of objects uses column names as keys for every row; array of arrays is more compact and keeps the header as the first array.
Name of the outer element that wraps all rows; each row becomes a <row> inside it.
Used in CREATE TABLE and INSERT statements. Letters, digits and underscores only.
Quoting and column types differ slightly between databases; pick the one you will import into.
Rewrite date cells in one format. ISO (2026-10-18) is safest for databases and code; keep leaves them as they appear in the source.
How to use this tool
- 1
Upload the ODS files
Add one .ods spreadsheet or a batch of up to 20, each up to 95 MB.
- 2
Choose which sheets
Sheets to convert is set to All sheets. Switch it to First sheet under Advanced settings when only the front tab matters.
- 3
Convert to XLSX
Press Convert to XLSX, download the workbook and send it on or open it in Excel, Google Sheets or Numbers.
ODS to XLSX rewrites an OpenDocument spreadsheet as an Excel workbook, keeping every sheet's values and tab names, so a file built in LibreOffice Calc lands in Excel's own format.
Who sends ODS files and who needs XLSX
ODS is the native spreadsheet format of LibreOffice and Apache OpenOffice, the free suites used by schools, public administrations and anyone who prefers not to pay for Office. Several governments made OpenDocument their reference format for exchanging editable files; the UK Cabinet Office chose it in 2014. That leaves a steady flow of .ods files heading toward people whose desktop, phone and accounting add-ins all assume Excel.
The person converting is usually on one side of that gap: a LibreOffice user who was asked for an Excel file, or an Excel user who received an ODS and has to re-upload it somewhere strict. Coming from older Excel rather than Calc? XLS to XLSX handles the Office 97–2003 format, and Mac users with Numbers files can use Numbers to Excel.
Ways to convert ODS to XLSX compared
| This converter | LibreOffice Save As | Opening the ODS in Excel | |
|---|---|---|---|
| Works without an office suite installed | yes | no | no |
| Batch of 20 files without command-line tools | yes | no | no |
| Every sheet with its tab name | yes | yes | yes |
| Formulas stay live | Values only | yes | yes |
| Cell styles and charts | no | Mostly | Mostly |
What carries over from ODS to XLSX
Text, numbers and dates move cell for cell, sheet for sheet, in the same order. Dates stay dates: ODS records them as ISO date values, XLSX as serial numbers with a date format, and the converter translates one into the other. Long text, Unicode names and empty cells are preserved, and the first sheet stays the first tab when the file opens.
What does not travel is presentation and logic: conditional formatting, cell colors, charts, comments, macros written in LibreOffice Basic and named ranges. If the file is a finished report with charts, LibreOffice's own Save As is the better route. If it is a data sheet that someone will sort, filter or import, the converted workbook is exactly what they need, and clean values are often easier to work with than a stranger's formulas.
ODS and XLSX format facts
ODS
OpenDocument Spreadsheet
ODS is the spreadsheet format of the OpenDocument standard, maintained by OASIS since 2005 and approved by ISO. It is the native format of LibreOffice Calc and supports multiple sheets, formulas, charts and styles. Excel and Google Sheets can open and save ODS, though some functions and formatting may differ. Several public bodies prefer it as an open standard.
- Compression
- –
- Transparency
- –
- Animation
- –
- Introduced
- 2005 · OASIS
XLSX
Microsoft Excel workbook
XLSX is Microsoft Excel's default workbook format since Office 2007, based on the Office Open XML standard. It stores multiple sheets, formulas, formatting, charts, pivot tables and data validation in a ZIP package of XML. It supports over a million rows per sheet and is the default exchange format for business spreadsheets. Google Sheets, LibreOffice and Numbers open XLSX, though macros and advanced features may not carry over.
- Compression
- –
- Transparency
- –
- Animation
- –
- Introduced
- 2007 · Microsoft
ODS goes to XLSX when a spreadsheet leaves the LibreOffice world: a report for a client on Microsoft 365, a template for an Excel-only portal, or a file for a coworker who should not have to wonder what .ods is.
ODS to XLSX questions
Excel can open ODS files, so why convert at all?
Excel has read and written ODS since Office 2007 Service Pack 2, but the receiver is often not Excel. Upload forms check for the .xlsx extension, scripts built on Excel libraries expect OOXML, and colleagues double-click files on phones where ODS support is patchy. An XLSX removes the question.
What happens to my LibreOffice formulas?
This converter moves data, so each formula cell arrives holding its last calculated value. That is what most recipients need. If the workbook must stay live, open it in LibreOffice and use File › Save As with the Excel 2007-365 type, which rewrites formulas in Excel syntax.
Are ODS and XLSX both ZIP files?
Yes. Rename either to .zip and you will find XML parts inside: content.xml in an ODS, one sheet file per tab in an XLSX. They are equally open on paper; the difference is which applications treat each one as home.
Will a sheet with more than a million rows convert?
Both formats share the 1,048,576-row ceiling per sheet in their main applications, so any sheet that LibreOffice Calc saved will fit in Excel too. Very wide sheets are also safe since Calc 7.4, which matches Excel's 16,384 columns.
Can I convert the workbook back to ODS later?
Yes. Upload the XLSX on the data converter page and choose ODS as the output. Values and sheet tabs make the round trip unchanged.
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