Click the "Select File" button above, and choose your FLU file.
You’ll see a preview, if available.
Click the "Convert file to..." button to extract text information.
Convert FLU to another file type
To convert FLU flashcards to another format, you need Fluany or other Data software.
Convert a file to FLU
To convert other file formats to the "Flashcard Deck Data" file type, you need software like Fluany or a similar tool.
About FLU files
A .FLU file is a flashcard deck created by the Fluany language learning application. It stores vocabulary terms, translations, and study session parameters in a structured format known as Flashcard Language Unity. The underlying data is built using standard JSON. The primary disadvantage of the .FLU format is vendor lock-in. It is highly restricted to the Fluany ecosystem, meaning you cannot natively share your vocabulary with more powerful, open-source spaced repetition tools like Anki. Exporting your data to a universally accepted standard is strictly necessary if you want full control and ownership over your study materials. We strongly recommend converting .FLU to CSV or plain TXT to guarantee compatibility with almost any flashcard software or spreadsheet program. While you may lose specific Fluany app settings or review history, your core vocabulary pairs will remain intact. This file format is notoriously difficult for standard online converters to process because the internal Flashcard Language Unity schema is proprietary and highly specific. Most automated tools fail to map the dictionary data correctly. However, you can easily rely on convert.guru. Just drag and drop your file to identify the format, view the internal text structure, and convert it when possible. Because our engine detects the underlying plain text JSON architecture, we can inspect the file and help you extract your valuable language data safely and practically.
Convert.Guru analyzes your FLU file, detects the exact format, and lets you read the text inside.
If you want to convert FLU file to MP4, AVI, MOV, WMV, FLV, WEBM, MKV, M4V, 3GP, OGV, ASF or RM, you can use Fluany or similar software from the "Language Flashcard Deck Storage" category. In the File menu, look for Save As… or Export….
To convert MTS, MOV, RMVB, DIVX, RM, H264, TS, WMV, VOB, MP4, XVID or AVI files to FLU, try Fluany or another comparable tool in the "Language Flashcard Deck Storage" category.
The FLU Converter Story
The history of Convert.Guru began over 25 years ago in California with Tom Simondi’s file-format database. A former contributor to Space Shuttle development and a software pioneer of the 1980s, Simondi established a trusted resource for file type analysis that was even referenced by Microsoft Windows XP. Today, we use modern technology to process and convert thousands of file formats while continually improving our FLU converter.