Convert EXR to FITS

Stop converting EXR files one by one. reaConverter processes entire folders to FITS automatically. Add files, pick settings, click Convert.

Manual EXR 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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EXR to FITS
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EXRFITS

How to Convert Multiple EXR Images 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. Built-in editing tools let you resize, crop, or watermark as you convert.

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Install reaConverter

2. Load your EXR files

Open reaConverter and add your EXR files. You can load individual files, entire folders, or even nested subfolders.

Drop your EXR files into the window or use File menu to browse and select folders.

Load your EXR files into reaConverter

3. Select FITS as output format

Choose FITS as the target format. Pick a destination folder or let reaConverter save files alongside the originals.

Select FITS as output format

4. Start EXR to FITS conversion

Hit Convert and let reaConverter do the work. The progress window shows status for each file in real time.

Start Conversion

After conversion, find your FITS files in the output folder. Click 'Show converted files' to open it directly.

What changes when you convert EXR to FITS

EXR can carry an alpha channel and FITS cannot. Transparent areas are composited onto a solid background during conversion, so pick that background colour deliberately: white is the default, and it is rarely the right choice for a logo that will sit on a dark page.

EXR to FITS Converter

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

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Do more with your images

Converting EXR images for use in a larger project? With reaConverter, you can convert, edit, and enhance your images in one streamlined process.

Our range of editing options includes such image processing actions as Resize, Rotate, Crop, Color Replace, Watermarks and more. Adjust actions include RGB, HLS, HSV, Brightness and Contrast. Auto-processing options are also available, such as auto-rotate and auto-crop.

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Image editing

User Reviews

Average User Rating:4.8
Last updated on August 08, 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
"Creating marketing materials for various platforms requires multiple file versions from single sources. reaConverter's workflow automation lets us generate PNG, JPEG, and SVG variants from AI and PSD files simultaneously. The color profile management ensures brand consistency across all outputs, and the processing speed allows for last-minute changes without delaying deadlines."
Rebecca Turner
Rebecca Turner
Marketing Agency CEO
"I was drowning in mismatched file formats until I found reaConverter. The one-click conversion and editing tools simplified everything, and the pricing is reasonable for small businesses. Now I spend less time troubleshooting and more time growing my brand!"
Emily K.
Emily K.
E-commerce Entrepreneur
"This program is incredibly simple and user-friendly, even beginners can use it with ease. It supports batch processing, works offline, and runs smoothly on my aging Acer Aspire laptop. Best of all, the output quality is outstanding!"
Kevin Harris
Kevin Harris
Happy User
"Your solution was buried deeper in search results than it should be. After struggling with unclear alternatives, I found your guides — finally, instructions that made sense for a first-time user like me. Excellent work!"
Richard E. Miller
Richard E. Miller
Satisfied Customer

EXR to FITS Conversion: FAQ

What are EXR files?

EXR (OpenEXR) is a high-dynamic-range (HDR) raster file format developed by Industrial Light & Magic (ILM) for professional visual effects (VFX), computer-generated imagery (CGI), and high-end digital imaging. Designed to handle extreme color depth and complex compositing workflows, EXR has become an industry standard in film production, animation, and scientific imaging.

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 EXR to FITS?

Yes! reaConverter instantly converts .exr 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.

What is reaConverter used for?

reaConverter is a software program used for converting images and other types of files from one format to another. It supports a wide range of file formats and allows users to convert multiple files at once, making it a valuable tool for graphic designers, photographers, and other professionals who work with digital images. reaConverter also includes features for resizing, cropping, and editing images, along with batch processing capabilities that help automate repetitive tasks.

Can I convert EXR to FITS online?

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

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

The best way to change EXRs 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 EXR to FITS.

How can I automate EXR 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 EXR 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 exr to fits converter for batch processing.

What else can I do with reaConverter?

Convert PDFWatermark photosConvert Gerber imagesCrop photoConvert DICOM images

EXR and FITS: related conversions

Other ways to convert EXR files, and other sources that convert to FITS.

EXR to PNGEXR to JPGEXR to PDFDCX to FITSDDS to FITSDIB to FITS
All EXR conversionsAll FITS conversions

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