Convert FRE to FITS

FRE to FITS conversion that keeps your files private. reaConverter runs offline on your computer with full batch processing support.

Manual FRE to FITS conversion wastes hours. reaConverter automates the process — just add files and click Convert. Everything happens offline on your computer — no uploads, no cloud risks.

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FRE to FITS
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How to Convert Multiple FRE Files to FITS?

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.

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Install reaConverter

2. Load your FRE files

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

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

Load your FRE files into reaConverter

3. Select FITS as output format

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

Select FITS as output format

4. Start FRE to FITS conversion

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

Start Conversion

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

FRE to FITS Converter

reaConverter offers the fastest, simplest solution for converting your FRE 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 FRE 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
Image editing

User Reviews

Average User Rating:
Last updated on January 17, 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.
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
Joseph Wilson
Satisfied Customer
"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
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
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
Jason P. Bailey
Non-Profit Coordinator
"5/5⭐ Finally! Does what it promises - converts AND tweaks images without complicated menus. Perfect for quick jobs."
J. Mitchell
J. Mitchell
Satisfied Customer

FRE to FITS Conversion: FAQ

What are FRE files?

The FRE image format is associated with medical equipment software used for magnetic resonance imaging (MRI). FRE files most likely contain images captured using an MRI device and can be opened with a limited number of image viewers. They can, however, be converted to a more accessible format, for easier transfer and storage.

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 FRE to FITS?

Yes! reaConverter instantly converts .fre 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 FRE to FITS online?

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

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

The best way to change FREs 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 FRE to FITS.

How can I automate FRE 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 FRE 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 fre to fits converter for batch processing.

What else can I do with reaConverter?

Set file dateCopy EXIF dataConvert RAW formatsConvert PDFAdd text on pictures

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