Convert R3D to FITS

R3D to FITS conversion that preserves quality. reaConverter gives you control over color space, resolution, and compression.

Online converters too slow for your R3D files? reaConverter works locally and handles unlimited batches. All processing runs locally on your PC, so your files stay private and secure. Photographers use it to batch process entire shoots in minutes.

1. Download and Install reaConverter

Download reaConverter and install it in seconds. The setup is straightforward — no complex configuration, no extra software required. Need edits? Resize, rotate, or add watermarks during conversion.

Install reaConverter

2. Load your R3D files

Open reaConverter and import your .r3d files. No file limits, no slowdowns. Add as many as you need.

You can drag-and-drop files, browse to a folder, or add entire directory trees including subfolders.

3. Select FITS as output format

Pick FITS as the output format. Set the destination folder and optionally configure resolution, quality, or file naming.

4. Start R3D to FITS conversion

Click the Convert button to start. reaConverter will process all your files with the settings you selected.

When finished, your new .fits files will be waiting in the destination folder.

R3D to FITS Converter

reaConverter offers the fastest, simplest solution for converting your R3D files into FITS in seconds - all photos processed on your PC for maximum privacy and speed.

Download Free Trial

Do more with your images

Converting R3D 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.

Image editing tools

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

"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

"I'm really impressed with this software - it converts files between formats incredibly fast!"

Lin Zhang

Happy User

"I firmly believe working with JPEG — the universal format supported by all devices and apps—is the wisest choice. reaConverter handles these conversions flawlessly."

Ava Thomas

Happy User

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

Elena Anderson

Happy User

R3D to FITS Conversion: FAQ

Can reaConverter convert R3D to FITS?

Yes! reaConverter instantly converts .r3d 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 R3D to FITS online?

If you only need to convert a few R3D files to FITS format, feel free to try our free online free online R3D to FITS converter — perfect for small batches with no installation needed!

How can I turn R3D files into FITS on my computer?

The best way to change R3Ds 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 R3D to FITS.

How can I automate R3D 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 R3D 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 r3d to fits converter for batch processing.

What else can I do with reaConverter?

Convert CAD formats Set picture bit depth Convert GIS files Convert RAW formats Set file date