Convert HDRU to FITS

HDRU to FITS made simple. Add files or folders, pick your settings, click Convert. reaConverter handles the rest — even thousands of files.

Manual HDRU 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.

1. Download and Install reaConverter

Download reaConverter and install it in seconds. The setup is straightforward — no complex configuration, no extra software required.

Install reaConverter

2. Load your HDRU files

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

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

3. Select FITS as output format

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

4. Start HDRU to FITS conversion

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

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

HDRU to FITS Converter

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

Download Free Trial

Do more with your files

Converting HDRU 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 24, 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

"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

Satisfied Customer

"Converts files in seconds! Finally a tool that's both fast and simple to use."

Wei Chen

Happy User

"I'd been searching for reliable conversion software forever — reaConverter has everything I need! After installing and watching the tutorial, I had my files converted to the perfect format in minutes. Flawless experience!"

Sanjay Mehta

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

Marketing Agency CEO

HDRU to FITS Conversion: FAQ

Can reaConverter convert HDRU to FITS?

Yes! reaConverter instantly converts .hdru 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 HDRU to FITS online?

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

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

The best way to change HDRUs 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 HDRU to FITS.

How can I automate HDRU 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 HDRU 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 hdru to fits converter for batch processing.

What else can I do with reaConverter?

Convert Gerber files Crop images Convert PDF files Watermark pictures Convert vector files