Add your XLTM file
Drop one or more .xltm files onto the converter above, or browse for them. They load into browser memory only — nothing is uploaded, so there is no size-based pricing and no server queue.
Converting a .xltm file to .ods extracts the document's content from its office package into a portable form. Free, private, and validated — the file never leaves your browser.
Batch files can each use a different output. Nothing uploads for local conversions.
Working inputs include camera RAW, browser-local audio/video, PDF, CBZ/CBR comics, office documents, ebooks, markup, 3D models, structured text, images, and archives.Converting a .xltm file to .ods extracts the document's content from its office package into a portable form. An .xltm file is a Microsoft Excel template that is allowed to carry VBA macros, so every workbook created from it inherits both the layout and the macro project. It is the template counterpart to .xlsm.
An .ods file is an OpenDocument spreadsheet, the workbook format LibreOffice Calc saves by default. Like its .odt sibling it is XML in a ZIP, but its content.xml describes tables of typed cells rather than paragraphs of prose. For this route the practical draw is open ISO 26300 standard with several independent implementations and dual raw-plus-display cell values make reliable data extraction easier — balanced against excel reads and writes it, but pivot tables and advanced styling can degrade, which is worth knowing before you commit a large batch.
The practical trigger for this conversion is usually a mismatch: with .xltm, blocked by most mail gateways and by many corporate security policies. Switching to .ods buys you open ISO 26300 standard with several independent implementations, which is why it is the better fit for native saves from LibreOffice and OpenOffice Calc. Because the conversion runs locally, trying it costs nothing but a few seconds of compute on your own machine.
| Aspect | Macro-enabled Excel template (.xltm) | OpenDocument spreadsheet (.ods) |
|---|---|---|
| Format type | Text-based — characters and structure, so there is no visual quality loss | Text-based — characters and structure, so there is no visual quality loss |
| How it stores data | same package as .xltx: workbook, worksheets, shared strings, and styles in a ZIP | cells carry both a typed raw value attribute (office:value) and a formatted display string, so extractors can choose machine or human output |
| Strongest at | departmental reporting templates with automated refresh or validation | native saves from LibreOffice and OpenOffice Calc |
| Weak spot | blocked by most mail gateways and by many corporate security policies | excel reads and writes it, but pivot tables and advanced styling can degrade |
| Metadata | standard docProps core and app parts ride in the package and are dropped by tabular exports | meta.xml records the creator, timestamps, and table and cell statistics alongside the document |
Drop one or more .xltm files onto the converter above, or browse for them. They load into browser memory only — nothing is uploaded, so there is no size-based pricing and no server queue.
Select .ods in the output menu next to each file. The menu only offers targets this engine can genuinely produce, so if ODS is selectable, the route is real and validated.
Press Convert. The package is unzipped in memory and its XML content parsed locally; nothing is uploaded.
Each result is signature-checked before the download unlocks, so a failed encode can never masquerade as a valid ODS file. Outputs keep the original filename with the .ods extension.
There is no visual quality to lose — xltm is text-oriented and ods is text-oriented, so the question is structural fidelity. Text, ordering, and basic structure are preserved; complex layout, embedded objects, and styling beyond the target's model are simplified.
Yes — the .xltm file is processed inside your browser tab and never uploaded. The package is unzipped in memory and its XML content parsed locally; nothing is uploaded. Close the tab and the file is gone from memory.
LibreOffice and OpenOffice treat .ods as native, Excel has supported it since Office 2007 SP2, and Google Sheets imports and exports it. Because the container is standard ZIP with XML inside, browser-side text extraction works the same way it does for .xlsx.
It depends on the content: cells carry both a typed raw value attribute (office:value) and a formatted display string, so extractors can choose machine or human output. Convert one representative file first and compare before batch-processing a large set.
In .xltm, standard docProps core and app parts ride in the package and are dropped by tabular exports. Re-encoding through the browser pipeline does not carry embedded metadata into the output, which doubles as a privacy scrub — check the exported file if you specifically need tags preserved.