ARFF Converter

Extract text from dataset files (ARFF)


Drop or upload your .ARFF file

How to extract text from your ARFF file

  1. Click the "Select File" button above, and choose your ARFF file.
  2. You’ll see a preview, if available.
  3. Click the "Convert file to..." button to extract text information.

Convert ARFF to another file type

To convert ARFF datasets to another format, you need Weka or other Data software.

Convert a file to ARFF

To convert other file formats to the "Machine Learning Dataset" file type, you need software like Weka or a similar tool.


About ARFF files

The .ARFF (Attribute-Relation File Format) is an ASCII text file that describes a list of instances sharing a set of attributes. Developed by the University of Waikato, it serves as the primary input format for the Weka machine learning and data mining suite.

To natively open and analyze these files, you typically need Weka or a programming environment like Python (utilizing libraries such as scipy.io.arff) or R.

The primary disadvantage of .ARFF files is their strict structural syntax and lack of general interoperability. The file is split into two sections: a Header containing @relation and @attribute tags, and a Data section marked by @data. Outside of the academic machine learning ecosystem, this format is highly restrictive. Standard spreadsheet software like Microsoft Excel or standard BI tools cannot parse the custom header tags, causing import errors and formatting breakdowns for users who simply need to view the raw data.

For general data analysis and broad compatibility, you should convert .ARFF to CSV or XLSX. For web APIs and developer usage, convert to JSON. Drag and drop your file here to analyze and convert it - free, online, and without installing software on convert.guru.

Convert.Guru analyzes your ARFF file, detects the exact format, and lets you read the text inside.

Users also converted ZIP, DATASET_, CSV, TXT, XLSX, ARFF 2, DATASET, DATA, RAR, PDF, TSX, MAT and XLS files.


FAQ

If you want to convert ARFF file to CSV, JSON, XML, YAML, YML, TOML, INI, CFG, CONF, DAT, DB or SQL, you can use Weka or similar software from the "Machine Learning Dataset" category. In the File menu, look for Save As… or Export….

To convert DBF, XML, SQLITE, XLSX, SQL, TSV, ACCDB, YAML, MDB, CSV, ODS or JSON files to ARFF, try Weka or another comparable tool in the "Machine Learning Dataset" category.



The ARFF 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 ARFF converter.