NTC Converter

Extract text from Nikon tone curve files (NTC)


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

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

Convert NTC to another file type

To convert NTC tone curves to another format, you need Nikon NX Studio or other Settings software.

Convert a file to NTC

To convert other file formats to the "Color Grading Preset" file type, you need software like Nikon NX Studio or a similar tool.


About NTC files

The .NTC file extension refers to a Nikon Tone Curve file, a proprietary settings format developed by Nikon. Unlike standard image files like JPG or TIFF, this file contains metadata instructions - specifically, a graph of input vs. output tonal values (curves) - used to adjust contrast and brightness. Photographers create these files in software like Nikon Camera Control Pro to upload custom processing rules directly into the camera's firmware. The main frustration for users is that .NTC files are essentially locked boxes; they are binary, unreadable by text editors, and completely incompatible with industry-standard tools like Adobe Lightroom or Capture One. If you switch editng ecosystems, your custom camera profiles become obsolete data bloat. To salvage this data, the ideal workflow involves converting the .NTC data points into an ACV (Adobe Curve) file for use in Adobe Photoshop or a CUBE (LUT) for video workflows. For simple analysis, extracting the curve coordinates to CSV or TXT is the best archiving strategy.

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

Users also converted C2, HPT and GRG files.


FAQ

If you want to convert NTC file to TMP, TEMP, CACHE, LOG, BAK, OLD, NEW, PART, DOWNLOAD, CRDOWNLOAD, LOCK or PID, you can use Nikon NX Studio or similar software from the "Camera Image Processing" category. In the File menu, look for Save As… or Export….

To convert DEVICE, CACHE, SOCK, SYMLINK, PID, MOUNT, FIFO, LOG, PIPE, TMP, JUNCTION or TEMP files to NTC, try Nikon NX Studio or another comparable tool in the "Camera Image Processing" category.



The NTC 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 NTC converter.