ODT Converter
FileFlip converts ODT files into 61 other formats entirely inside your browser, using Pandoc, MuPDF and ImageMagick compiled to WebAssembly. The ODT file is never uploaded to a server: it is read off your disk, converted on your own machine, and saved back by the browser. There is no file-size limit and no account to create.
How do I convert an ODT file?#
- Drop your ODT file onto the converter at the top of this page, or click it to pick one from your computer.
- Choose the format you want out of it. FileFlip downloads the engine that conversion needs, once, and your browser caches it.
- Conversion starts the moment you pick the format, and the result is yours to download. The work happens in this tab, so nothing is uploaded and nothing is queued.
Is it safe to convert ODT files online?#
Yes, because nothing is uploaded. FileFlip converts ODT files inside the browser tab you already have open, using WebAssembly builds of the same engines a desktop converter would install. Your file is read from your own disk into the page's memory, and no request carrying it is ever made.
You do not have to take that on trust. Open your browser's network panel, run a conversion, and you will see the engine come down and your file go nowhere. There is no upload, no server-side copy, no retention window, and no account tied to what you converted.
How FileFlip works lists every engine, its version and its download size, and shows how to check for yourself that nothing leaves your machine.
What happens to a ODT file#
FileFlip converts ODT into 61 formats with Pandoc, MuPDF and ImageMagick, all of it inside the browser tab. Each conversion below names the engine it uses, what it downloads, and exactly what that conversion keeps or drops.
| Category | Documents |
|---|---|
| File extension | .odt |
| FileFlip support | Read and written |
| Conversions available | 61 |
| Engines | Pandoc, MuPDF and ImageMagick |
| Downloaded to your browser | 65.8 MB on the first conversion, then cached |
What is an ODT file?#
An ODT file is a ZIP of XML parts specified by the OASIS OpenDocument standard (ISO/IEC 26300), the format LibreOffice Writer and OpenOffice Writer save by default instead of a Microsoft format.
Use ODT when the destination is LibreOffice, OpenOffice, or an organization whose policy specifically requires the open ODF standard.
Convert ODT to DOCX when the document needs to go to someone who only has Microsoft Word, still the more widely recognized format outside government and open-source use.
The ODT file format reference covers the specification, the programs that open one, and what each conversion keeps or drops.
ODT questions people ask#
Can Microsoft Word open ODT files?
Yes, Microsoft Word has opened and saved ODT files natively since Office 2007 Service Pack 2, with no plugin required. Formatting generally survives well for standard text, tables and images, though some styles specific to one application can shift slightly on the round trip.
What's the difference between ODT and DOCX?
Both are ZIP archives of XML describing a word processing document, but they follow different, incompatible schemas: ODT implements the OASIS OpenDocument standard, and DOCX implements Microsoft's Office Open XML standard. They cover similar ground, text, styles, tables, images, but aren't interchangeable at the file level, which is why converting between them is a real translation rather than a rename.
Why do some governments require ODT instead of DOCX?
Because ODT is governed by an open, ISO-ratified standard that no single company controls, which agencies want for documents meant to stay readable for decades regardless of which vendor's software is popular later. The UK civil service and Germany's federal government are among those that have mandated ODF-family formats for official documents.
Does converting ODT to DOCX lose formatting?
Usually only in small ways. Standard text, tables, images and common styles convert cleanly between ODT and DOCX, but features that don't map directly between the OpenDocument and Office Open XML schemas, certain list numbering styles or advanced frame layouts, can shift slightly and are worth a quick check after converting.