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C4 Converter
Stop converting C4 files one by one. reaConverter processes entire folders in one run, with the same settings applied throughout.
How to Convert .c4 Files in Bulk
1. Install reaConverter
2. Select C4 Files
3. Start Conversion
Step by step
See It in Action
For quick and effortless C4 file handling on your PC, reaConverter offers powerful conversion tools with batch processing. Best of all, it works entirely offline — ensuring your sensitive data never leaves your computer.
Extra Tools
Do more with your files
Converting C4 files for use in a larger project? reaConverter offers many ways to process files, so you can customize them according to your requirements.
Our range of editing options includes auto-processing options such as auto-rotate, auto-crop, watermarking and more. Change Color Space, copy Metadata, set DPI, manage ICC Profile, control Bit Depth.
User reviews
From those who tried it
Average User Rating:Last updated on August 28, 2026
Questions & Answers
C4 files: Frequently Asked Questions
What are C4 files?
A C4 file represents an Edmics or Jedmics bi-level raster image. Jedmics stands for "Joint Engineering Data Management Information and Control System" and represents an initiative of the US Department of Defense. C4 Jedmics files contain bitmap images intended for military use and are considered very rare files.
Can reaConverter open C4 files?
reaConverter fully supports the C4 file format – open, edit, and export C4 files to any other popular file format with ease.
How do I change C4 to another format?
reaConverter is a user-friendly tool for converting C4 files. Once installed on your computer, it allows you to convert all your .c4 files at once with just a few clicks. You can even convert C4 files directly from Windows Explorer using the right-click menu — fast and convenient.
Can I convert C4 online?
If you only want to convert a few C4 files, you are welcome to try our free online C4 converter.
How can I turn C4 files on my computer to another format?
The best way to convert C4 files on your PC is to get a quality piece of software, such as reaConverter. This software is extremely efficient in managing a wide range of batch files conversions, including conversion from C4.
How can I automate C4 files conversion?
reaConverter supports all the essential automation features, such as right-click сonversion and Watch Folders, for the most efficient automated file conversion in any software of its kind.
Can I convert C4 files using scripts or the command-line interface?
reaConverter provides full access to all its features from the Windows command-line shell, including the command-line c4 converter.
What else can I do with reaConverter?
Convert GIS filesConvert RAW filesConvert raster to vectorChange bit depthConvert PDF
What formats can I convert a C4 file to?
Discover More
Beyond C4 conversion
Convert .c4 files in batches of any size, with editing and processing applied along the way. The same tool also handles 800+ other formats, including CAD, medical imaging, and GIS.
