Convert ATK to FITS

Bulk ATK to FITS conversion with consistent results. Set it up once, process thousands of files with the same quality every time.

Tired of converting ATK files one at a time? reaConverter processes entire folders to FITS automatically. Handles large batches reliably without crashes or timeouts.

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ATK to FITS
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How to Convert Multiple ATK Files to FITS?

1. Download and Install reaConverter

reaConverter installs quickly on any Windows PC. No dependencies, no bloatware — just a clean setup that's ready to use immediately.

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Install reaConverter

2. Load your ATK files

Launch reaConverter and drop in your ATK files. The software queues everything for batch processing with consistent settings.

Add files by dragging them in, browsing folders, or using the right-click menu from Windows Explorer.

Load your ATK files into reaConverter

3. Select FITS as output format

Pick FITS as output format and choose the destination folder where you want to save new .fits files.

Select FITS as output format

4. Start ATK to FITS conversion

Then simply press the Convert button and your conversion will begin in no time!

Start Conversion

Once the conversion is complete, you can find your FITS files in the destination folder you selected.

ATK to FITS Converter

reaConverter offers the fastest, simplest solution for converting your ATK files into FITS in seconds - all files processed on your PC for maximum privacy and speed.

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Do more with your files

Converting ATK files for use in a workflow? 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.

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User Reviews

Average User Rating:
Last updated on January 16, 2026
"Essential for our astroimaging pipeline! reaConverter perfectly handles FITS files from our research telescope, preserving all WCS coordinates and photometric data during batch conversion to TIFF. Now we process 100+ deep-sky exposures nightly without losing critical metadata for our exoplanet studies!"
Joseph Wilson
Joseph Wilson
Satisfied Customer
"reaConverter makes FITS conversion incredibly easy. We batch convert astronomical images to standard formats for presentations and analysis, all automated through the command-line. It’s fast, reliable, and handles large datasets without issues."
Laura N.
Laura N.
Astrophysics Research Assistant
"This software just works! My old laptop can’t handle Photoshop, but reaConverter flies through conversions without breaking a sweat. Wi-Fi gone? Still strong!"
Robert Williams
Robert Williams
Happy User
"Rare software that actually does it all! Converts anything, beautiful interface, and never lets me down. A must-have!"
Henry R.
Henry R.
Happy User
"For cross-platform compatibility, JPEG remains the gold standard. reaConverter’s precision conversions ensure perfect results every time, whether for presentations, websites, or client deliverables."
Paul Baker
Paul Baker
Happy User
"An efficient all-in-one solution for image conversion and light editing, designed for maximum user-friendliness."
Elena Anderson
Elena Anderson
Happy User

ATK to FITS Conversion: FAQ

What are ATK files?

ATK is a raster image file format associated with Andrew Toolkit, a set of tools for distributing documents that contain embedded objects. The format was developed as part of the Andrew Project, launched at the Carnegie Mellon University in the United States, in the early 1980s. The project resulted in the development of several other types of computing infrastructure tools too, and was considered an important step for making such tools more accessible at the time.

What are FITS files?

The FITS (Flexible Image Transport System) format is a standard format used particularly for storing, transferring and processing scientific images from fields such as astronomy. FITS was first launched as an open standard in the early 1980s and has gone through several subsequent upgrades. FITS files contain not just images, but also data related to photometry and spatial calibration, and information about the origin of the image. Similar formats include FIT and FTS.

Can reaConverter convert ATK to FITS?

Yes! reaConverter instantly converts .atk to .fits with perfect quality preservation. With its batch processing feature, you can convert multiple files at once in just a few clicks. You can even convert images directly from Windows Explorer using the right-click menu — fast and convenient.

Can I convert ATK to FITS online?

If you only need to convert a few ATK files to FITS format, feel free to try our free online free online ATK to FITS converter — perfect for small batches with no installation needed!

How can I turn ATK files into FITS on my computer?

The best way to change ATKs to FITSs on your PC is to install 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 ATK to FITS.

How can I automate ATK to FITS files conversion?

reaConverter supports all the most useful automation features such as right-click сonversion and Watch Folders for the most efficient automated files conversion in any software of this type.

Is there a way to convert ATK files to FITS using the command prompt?

reaConverter provides full access to all its features via Windows command line, including a high-performance command-line atk to fits converter for batch processing.

What else can I do with reaConverter?

Change format settingsChange DPIConvert GIS filesConvert vector filesChange color space

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