Convert STW to FITS

With our fast and user-friendly STW to FITS converter, you can steer clear of the tedious task of manually converting multiple .stw files into fits format for hours on end.

reaConverter is an advanced software designed for stw to fits conversion. It supports a wide range of features such as batch processing, automated conversion, image editing, and more.

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.

Install reaConverter

2. Load your STW files

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

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

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.

4. Start STW to FITS conversion

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

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

STW to FITS Converter

reaConverter offers the fastest, simplest solution for converting your STW 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 STW 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 May 24, 2025

"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

"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

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

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

Non-Profit Coordinator

"5/5⭐ Finally! Does what it promises - converts AND tweaks images without complicated menus. Perfect for quick jobs."

J. Mitchell

Satisfied Customer

STW to FITS Conversion: FAQ

Can reaConverter convert STW to FITS?

Yes! reaConverter instantly converts .stw 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 STW to FITS online?

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

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

The best way to change STWs 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 STW to FITS.

How can I automate STW 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 STW 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 stw to fits converter for batch processing.

What else can I do with reaConverter?

Set manual file date Copy metadata (EXIF, IPTC)Change format settings Change DPI Convert CAD formats