Convert GTIFF to FITS

The quick and simple way to change your GTIFF into FITS files is to use a quality piece of software, such as reaConverter.

reaConverter offers offline file conversion between numerous formats, including GTIFF to FITS, plus additional image editing tools for enhanced file preparation.

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GTIFF to FITS
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GTIFFFITS

How to Convert Multiple GTIFF Files to FITS?

1. Download and Install reaConverter

reaConverter is quick to download, install and launch. This standalone software is extremely efficient in managing a wide range of batch conversions. reaConverter is incredibly powerful and boasts an extensive variety of features.

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Install reaConverter

2. Load your GTIFF files

Start reaConverter and load all the .gtiff files you intend to convert into .fits. The software supports multiple GTIFF conversion and processes all files locally on your computer.

Select GTIFFs from a folder or by drag-and-dropping them directly into the reaConverter window.

Load your GTIFF files into reaConverter

3. Select FITS as output format

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

Select FITS as output format

4. Start GTIFF to FITS conversion

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

Screenshot

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

GTIFF to FITS offline

reaConverter offers the fastest, simplest solution for converting your GTIFF 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 GTIFF 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
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User Reviews

Average User Rating:
Last updated on April 24, 2025
"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
"An ultra-fast solution for minimizing file sizes. The entire conversion process takes just 3 minutes!"
Logan B.
Satisfied Customer
"I use the online converter — it’s quick and hassle-free!"
Jian Wong
Happy Online User
"Working in a print studio means constantly juggling obscure file formats. I used to waste hours Googling converters or installing random software — until reaConverter became my Swiss Army knife. Install it once, and you're set forever. No internet? No problem!"
Helen Evans
Satisfied Customer
"The step-by-step video makes conversion foolproof. I'd recommend this to my grandma - it's that well-explained!"
DeShawn M. Thompson
Happy User

GTIFF to FITS Conversion: FAQ

What are GTIFF files?

GeoTIFF (.gtiff) is a georeferenced image format used for storing raster graphics with embedded geographic metadata. Common in GIS and remote sensing, it allows precise alignment with map coordinates, making it ideal for satellite imagery, terrain models, and aerial photography. GeoTIFF files are widely supported by mapping software and can be converted or edited without losing their spatial reference.

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 GTIFF to FITS?

Yes! reaConverter instantly converts .gtiff 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 GTIFF to FITS online?

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

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

The best way to change GTIFFs 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 GTIFF to FITS.

How can I automate GTIFF 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 GTIFF 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 gtiff to fits converter for batch processing.

What else can I do with reaConverter?

Convert DICOM imagesResize pictureConvert CAD formatsChange image bit depthSet file date

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