NDK Converter

Extract text from Seismic data files (NDK)


Drop or upload your .NDK file
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How to extract text from your NDK file

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

Convert NDK to another file type

To convert NDK Data files to another format, you need GMT or other Data software.

Convert a file to NDK

To convert other file formats to the "Seismic Data File" file type, you need software like GMT or a similar tool.


About NDK files

The .ndk file primarily stores seismic data and earthquake catalogs for the Global CMT Project. These files are utilized by geophysicists using GMT (Generic Mapping Tools) to map and analyze centroid-moment-tensor solutions for global earthquakes. A secondary, much rarer use for the .ndk extension is a Lotus Notes Design Elements File used by IBM. The primary .ndk format is a highly specialized data structure. Its main disadvantage is its niche application; standard text editors or spreadsheet software often fail to parse the specific columnar data correctly without dedicated parsing scripts. Sharing these files with non-seismologists is practically impossible without conversion. To make the data accessible, the best conversion targets are standard CSV or TXT files for spreadsheet analysis, or GEOJSON for geographic plotting. Because this is a specialized format, standard online converters fail to process it. Often only the original software can properly read or export the data. If our analysis detects a supported underlying or embedded format, viewing or conversion may still be possible.

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

Users also converted QOS, NS4 and IIB files.


FAQ

If you want to convert NDK file to CSV, JSON, XML, YAML, YML, TOML, INI, CFG, CONF, DAT, DB or SQL, you can use GMT or similar software from the "Earthquake Catalog Data Storage" 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 NDK, try GMT or another comparable tool in the "Earthquake Catalog Data Storage" category.



The NDK 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 NDK converter.