Convert ECW to FITS

Stop converting ECW files one by one. reaConverter processes entire folders to FITS automatically — just drag, drop, and click Convert.

Batch ECW to FITS conversion doesn't have to be complicated. reaConverter processes entire folders with consistent quality settings. Works offline with no internet required, so you can convert anywhere, anytime.

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 ECW files

Load your ECW files into reaConverter. You can add individual files or point to folders, and the software will queue everything automatically.

Select ECWs from a folder or drag-and-drop them directly into the reaConverter window.

3. Select FITS as output format

Choose FITS for output and set your save location. reaConverter lets you customize quality and apply edits before conversion.

4. Start ECW to FITS conversion

Press the Convert button and reaConverter takes care of the rest. Processing time depends on file size and volume.

After processing, find all your new .fits files in the output location. The log shows details for each conversion.

ECW to FITS Converter

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

Download Free Trial

Do more with your images

Converting ECW 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 March 05, 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

"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

"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

ECW to FITS Conversion: FAQ

Can reaConverter convert ECW to FITS?

Yes! reaConverter instantly converts .ecw 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 ECW to FITS online?

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

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

The best way to change ECWs 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 ECW to FITS.

How can I automate ECW 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 ECW 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 ecw to fits converter for batch processing.

What else can I do with reaConverter?

Convert Gerber images Crop images Convert CAD formats Change bit depth Convert GIS files