Convert GTZ to FITS

Stop converting GTZ files one by one. reaConverter processes entire folders to FITS automatically — just drag, drop, and click Convert.

GTZ to FITS conversion is faster with the right tool. reaConverter handles everything from a few files to thousands in one batch. Processes files consistently every time, with full control over quality and output settings.

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.

Install reaConverter

2. Load your GTZ files

Launch reaConverter and drop in your GTZ 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.

3. Select FITS as output format

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

4. Start GTZ to FITS conversion

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

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

GTZ to FITS Converter

reaConverter offers the fastest, simplest solution for converting your GTZ 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 GTZ 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.

Conversion features

User Reviews

Average User Rating:
Last updated on January 25, 2026

"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.

Astrophysics Research Assistant

"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

Satisfied Customer

"5/5⭐ Finally! Does what it promises - converts AND tweaks images without complicated menus. Perfect for quick jobs."

J. Mitchell

Satisfied Customer

"reaConverter is pure gold! Rock-solid performance with zero crashes. No internet needed—perfect for travel or low-connectivity work. The ultimate offline alternative to sketchy web converters. Plus, the desktop version keeps sensitive files secure since nothing ever gets uploaded to the cloud."

Malik T. Martin

Satisfied Customer

"I was skeptical at first, but reaConverter exceeded my expectations. The interface is intuitive, and the advanced settings let me tweak outputs perfectly. Plus, the customer support is fantastic!"

Sarah Lane

Satisfied Customer

"An efficient all-in-one solution for image conversion and light editing, designed for maximum user-friendliness."

Elena Anderson

Happy User

GTZ to FITS Conversion: FAQ

Can reaConverter convert GTZ to FITS?

Yes! reaConverter instantly converts .gtz 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 GTZ to FITS online?

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

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

The best way to change GTZs 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 GTZ to FITS.

How can I automate GTZ 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 GTZ 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 gtz to fits converter for batch processing.

What else can I do with reaConverter?

Copy IPTC data Convert GIS files Convert vector images Convert picture color space Convert CAD formats