NAT → FITS · Windows

Convert NAT to FITS

Batch convert NAT to FITS on an ordinary Windows PC. No GIS licence, no command line, the same settings applied to every file.

NAT to FITS conversion is faster with the right tool. reaConverter handles everything from a few files to thousands in one batch. Processes files consistently every time, with full control over quality and output settings. Survey and cadastral data stays on your machine, with no upload at any point.

.nat.FITS
4.8

Converting files since 2001

Runs offline — nothing uploaded

Read what our users say →

How to Convert Multiple .nat Images to .fits?

1. Download and Install reaConverter

reaConverter installs quickly on any Windows PC. No dependencies, no bloatware — just a clean setup that's ready to use immediately. Need edits? Resize, rotate, or add watermarks during conversion.

2. Load your NAT files

Launch reaConverter and drop in your NAT files. The software queues everything for batch processing with consistent settings.

Add files by dragging them in, browsing folders, or using the right-click menu from Windows Explorer.

Load your NAT files into reaConverter

3. Select FITS as output format

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

Select FITS as output format

4. Start NAT to FITS conversion

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

Start Conversion

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

Step by step

How It Works

reaConverter offers the fastest, simplest solution for converting your NAT files into FITS without GIS software - all images processed on your PC for maximum privacy and speed.

Map Data Workflow

Turn GIS data into something anyone can open

Not everyone who needs to see NAT data has GIS software. reaConverter renders it to FITS for a report, an email or a slide, and handles a whole folder in one run.

  • Render every file in a folder to FITS with the same size and settings
  • Set DPI and output dimensions before the run, not afterwards
  • Pick up new data automatically with Watch Folders, or script the job from the command line

Everything runs on your PC, which matters for cadastral, utility and client data that should not pass through an upload form.

GIS data conversion

User reviews

What people say after the first batch

Average User Rating:4.8
Last updated on September 13, 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
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.
Laura N.
Astrophysics Research Assistant
5/5⭐ Finally! Does what it promises - converts AND tweaks images without complicated menus. Perfect for quick jobs.
J. Mitchell
J. Mitchell
Satisfied Customer
reaConverter is pure gold! Rock-solid performance with zero crashes. No internet needed—perfect for travel or low-connectivity work. The ultimate offline alternative to sketchy web converters. Plus, the desktop version keeps sensitive files secure since nothing ever gets uploaded to the cloud.
Malik T. Martin
Malik T. Martin
Satisfied Customer
I was skeptical at first, but reaConverter exceeded my expectations. The interface is intuitive, and the advanced settings let me tweak outputs perfectly. Plus, the customer support is fantastic!
Sarah Lane
Sarah Lane
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

FAQ

NAT to FITS Conversion

Can reaConverter convert NAT to FITS?

Yes! reaConverter instantly converts .nat 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 Windows converter for 800+ formats, GIS data among them. For NAT to FITS it replaces the usual detour through QGIS, ArcGIS or ogr2ogr: add the files, pick the output format, and the whole batch converts offline. Surveyors, planners and engineering teams use it to pass data between GIS, CAD and everyday document formats.

Why choose offline conversion with reaConverter?

reaConverter is a software program that is used for offline files conversion. Your proprietary documents never leave your computer – essential for architects, engineers, healthcare and government contractors handling classified projects. Meets GDPR, HIPAA, CCPA, and corporate security policies by ensuring files never cross borders or third-party systems.

Can I convert NAT to FITS online?

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

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

The best way to change NATs 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 NAT to FITS.

How can I automate NAT 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 NAT 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 nat to fits converter for batch processing.

What else can I do with reaConverter?

Convert GIS filesConvert whole-slide imagesImage resizerConvert vector filesChange image DPI

Related conversions

Other ways to convert NAT files, and other sources that convert to FITS.

Discover More

Beyond format conversion

Batch conversion, editing, and processing across 800+ formats, from RAW and HEIC to DICOM, DWG, and PDF. Everything runs locally, with no cloud and no upload limits.

Free trial · Windows 10/11 · v8.0.250 · Files never leave your computer

reaConverter software