Convert GTP to FITS

Fast GTP to FITS conversion for Windows. reaConverter supports 700+ formats with batch processing and built-in editing tools.

Need to convert GTP to FITS? reaConverter handles batch conversion with ease, processing hundreds of files at once while preserving quality. Your files never leave your machine. No third-party servers, no privacy concerns.

1. Download and Install reaConverter

First, grab reaConverter from the download button below. Installation is fast, and the software runs offline — no account or signup needed.

Install reaConverter

2. Load your GTP files

Launch reaConverter and load the GTP files you want to convert. Add a few files or thousands, batch processing handles them all.

Drag-and-drop GTPs directly into reaConverter or use the folder browser to load entire directories.

3. Select FITS as output format

Set FITS as output format and select where to save your converted files. Customize quality settings if needed.

4. Start GTP to FITS conversion

Press Convert to begin processing. You can watch the progress or minimize and let it run in the background.

Your converted FITS files will appear in the destination folder as soon as processing completes.

GTP to FITS Converter

reaConverter offers the fastest, simplest solution for converting your GTP 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 GTP 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 14, 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

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.

Astrophysics Research Assistant

"An excellent program! I use it regularly in my work - it supports nearly every file format imaginable. The interface is intuitive and runs flawlessly every time."

Roger Cook

Happy User

"For agencies handling confidential data, reaConverter eliminates cloud-upload risks while delivering unmatched conversion reliability. Our team uses it both in-office and remotely with identical results."

Jamal Bailey

Satisfied Customer

"Our volunteer team uses reaConverter to prepare images for fundraising campaigns. The learning curve was minimal, and the results are professional-grade. The customer support team even helped us customize a workflow — fantastic service!"

Jason P. Bailey

Non-Profit Coordinator

"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

Happy User

GTP to FITS Conversion: FAQ

Can reaConverter convert GTP to FITS?

Yes! reaConverter instantly converts .gtp 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 GTP to FITS online?

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

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

The best way to change GTPs 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 GTP to FITS.

How can I automate GTP 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 GTP 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 gtp to fits converter for batch processing.

What else can I do with reaConverter?

Set manual file date Change format settings Change DPI Convert PDF files Add text on pictures