FODT to DOCX Converter

Convert FODT to DOCX online for free. Fast, secure, and high-quality conversion with no sign-up or software required.

Free to useNo file stored beyond 1 hourEncrypted over TLS 1.2/1.3No watermarks

or drag and drop files here

Maximum file size is 1GB

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How it works

Three steps to your converted file

Everything happens in your browser tab - upload, pick a format, download. The heavy lifting runs on our servers.

Upload your file

Drag and drop, click to browse, or paste a URL. Batches take up to 20 files at once - 230+ input formats across video, audio, image, document, and archive types.

Choose an output format

Pick from over a hundred output formats. Filter by category or search by name - every option is open to everyone, no account needed.

Convert & download

Hit Convert and grab your download link moments later. Originals are erased when the job completes; results are cleared within about an hour.

What is an FODT file?

The FODT format (Flat XML OpenDocument Text) is a document file type defined by the OASIS OpenDocument Format (ODF) v1.2 specifications (ISO/IEC 26300). Unlike the standard ODT format, which acts as a ZIP-compressed container holding multiple XML sub-files and assets, FODT stores the entire document structure-including text, layout styles, and Base64-encoded images-within a single, uncompressed XML file. This human-readable architecture facilitates version control integration (e.g., Git) and direct XML parsing without requiring decompression libraries.

How to open an FODT file

FODT files are natively supported by the LibreOffice suite and Apache OpenOffice, which serve as the primary reference implementations for the ODF standard. Users on Windows, macOS, or Linux can open these files directly in LibreOffice Writer. Due to the uncompressed XML structure, the files can also be inspected or modified using code editors like Visual Studio Code or Notepad++, though this renders the raw markup rather than the formatted text.

FODT Technical Info

Full Name: Flat XML OpenDocument Text
Developed By: OASIS (Advancement of Structured Information Standards)
Initial Release: 2011
MIME Type: application/vnd.oasis.opendocument.text-flat-xml

What is a DOCX file?

The DOCX format is the default document standard for Microsoft Word 2007 and newer, based on the Office Open XML (OOXML) specification standardized under ISO/IEC 29500 and ECMA-376. It functions as a compressed ZIP container that packages separate XML files (such as document.xml, styles.xml, and settings.xml) alongside media assets. This modular XML architecture allows for improved data recovery and smaller file sizes compared to legacy binary DOC files, while explicitly prohibiting the storage of VBA macros.

How to open a DOCX file

DOCX is natively supported by Microsoft Word 2007+ on Windows and macOS. Due to its status as an ISO standard, it has broad compatibility with non-Microsoft ecosystem tools; it can be opened and edited by Apple Pages, Google Docs, LibreOffice Writer, and Apache OpenOffice. Furthermore, because it is a ZIP archive, users can rename the extension to .zip to extract and inspect the internal XML structure and embedded media assets manually.

DOCX Technical Info

Full Name: Word Open XML Document
Developed By: Microsoft
Initial Release: 2006
MIME Type: application/vnd.openxmlformats-officedocument.wordprocessingml.document

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Why RunConvert

The fastest way to convert any file

Purpose-built for speed, privacy, and breadth of format support.

Convert FODT to DOCX in seconds

Every FODT to DOCX conversion runs on our servers, so your device stays fast and the output quality stays intact.

Fast, cloud-powered

No queue, no waiting. Files are processed on high-performance servers and returned in seconds, even for large files.

Secure & private

Encrypted in transit and never shared with anyone. Uploads are erased the moment your job completes, and results shortly after.

Free - no account needed

Convert without creating an account - no credit card, no trial clock. Sign in only if you want history and higher daily limits.

Developer API

Convert FODT to DOCX via API

Automate FODT to DOCX conversions in three steps: create a job, upload your file, then poll for the result.

# 1. Create job
curl -X POST https://api.runconvert.com/v3/jobs \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "tag": "fodt-to-docx",
    "tasks": {
      "upload-file": {
        "operation": "import/upload"
      },
      "convert": {
        "operation": "convert",
        "input": "upload-file",
        "output_format": "docx"
      },
      "export-result": {
        "operation": "export/url",
        "input": "convert"
      }
    }
  }'

# 2. Upload your file (use upload_url from the response)
curl -X PUT "$UPLOAD_URL" --upload-file input.fodt

# 3. Poll for result
curl https://api.runconvert.com/v3/jobs/$JOB_ID?include=tasks \
  -H "Authorization: Bearer YOUR_API_KEY"

Replace YOUR_API_KEY with your RunConvert API key. Get your free API key at runconvert.com/api.