KTX2 → FITS · Windows

Convert KTX2 to FITS

Convert KTX2 to FITS on your own machine instead of an upload form. reaConverter processes everything locally, with no size limits.

Batch KTX2 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.

KTX2FITS
4.8

Converting files since 2001

Runs offline — nothing uploaded

Read what our users say

How to Convert Multiple KTX2 Images to FITS?

1. Download and Install reaConverter

reaConverter is a standalone Windows app — download, install, and start converting KTX2 files in under two minutes. reaConverter also includes editing tools: resize, crop, rotate, and more.

2. Load your KTX2 files

Open reaConverter and import your .ktx2 files. No file limits, no slowdowns. Add as many as you need.

Drag files into the window, use the Add Files button, or select entire folders.

Load your KTX2 files into reaConverter

3. Select FITS as output format

Select FITS as target format and pick where to save results. You can keep default settings or fine-tune the output.

Select FITS as output format

4. Start KTX2 to FITS conversion

Hit Convert to process your files. The log window shows progress, timing, and status for every file.

Start Conversion

Conversion complete? Your FITS files are saved to the destination folder, ready to use.

Step by step

How It Works

reaConverter offers the fastest, simplest solution for converting your KTX2 files into FITS in seconds - all images processed on your PC for maximum privacy and speed.

Power Features

Do more with your images

Converting KTX2 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

User reviews

What people say after the first batch

Average User Rating:4.8
Last updated on August 20, 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
An efficient all-in-one solution for image conversion and light editing, designed for maximum user-friendliness.
Elena Anderson
Elena Anderson
Happy User
Enable shell integration for lightning-fast file conversions directly from Windows Explorer.
R. Lewis
R. Lewis
Happy User
After 200+ conversions on my budget laptop (i3-1115G4/4GB RAM/Win11), reaConverter outperforms heavyweight tools. Zero crashes, low CPU usage during batch processing, and no internet dependency - exactly what professionals need.
Walter Morgan
Walter Morgan
Satisfied Customer
We deployed reaConverter across our department to standardize file formats for our archives. The command-line support and automation features integrated perfectly into our systems. Stellar performance and zero crashes—it just works.
David R.
David R.
IT Solutions Architect

FAQ

KTX2 to FITS Conversion

Can reaConverter convert KTX2 to FITS?

Yes! reaConverter instantly converts .ktx2 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 KTX2 to FITS online?

If you only need to convert a few KTX2 files to FITS format, feel free to try our free online free online KTX2 to FITS converter — perfect for small batches with no installation needed!

How can I turn KTX2 files into FITS on my computer?

The best way to change KTX2s 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 KTX2 to FITS.

How can I automate KTX2 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 KTX2 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 ktx2 to fits converter for batch processing.

What else can I do with reaConverter?

Convert microscopy filesResize picturesConvert PDFAdd watermark on photoConvert DICOM images

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Batch conversion, editing, and processing across 700+ formats, from RAW and HEIC to DICOM, DWG, and PDF. Everything runs locally, with no cloud and no upload limits.

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