FITS → STP · Windows

Convert FITS to STP

FITS to STP conversion without modelling software. reaConverter processes 3D files locally, so no extra licences are required.

FITS to STP 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. 3D artists rely on it when clients need different file formats.

DownloadFITS to STP ConverterConvert
FITS to STP
Online
.fits.STP
4.8

Converting files since 2001

Runs offline — nothing uploaded

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How to Convert Multiple .fits Images to .stp?

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.

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Install reaConverter

2. Load your FITS files

Open reaConverter and import your .fits 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 FITS files into reaConverter

3. Select STP as output format

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

Select STP as output format

4. Start FITS to STP conversion

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

Start Conversion

Conversion complete? Your STP 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 FITS files into STP in seconds - all images processed on your PC for maximum privacy and speed.

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3D Workflow

From picture to 3D model

Need a 3D STP from a flat FITS image? reaConverter vectorizes it, extrudes the shapes to the height you set, and works through a whole folder at once.

  • Each image is vectorized first, then extruded to the height you set in millimetres
  • Works best with logos, signs and line art: a photo has no clean outlines to follow
  • Keep unreleased designs and client models on your PC: nothing is uploaded
Vectorize images
3D model conversion

User reviews

What people say after the first batch

Average User Rating:4.8
Last updated on September 28, 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 ultra-fast solution for minimizing file sizes. The entire conversion process takes just 3 minutes!
Logan B.
Logan B.
Satisfied Customer
I use the online converter — it’s quick and hassle-free!
Jian Wong
Jian Wong
Happy Online User
Working in a print studio means constantly juggling obscure file formats. I used to waste hours Googling converters or installing random software — until reaConverter became my Swiss Army knife. Install it once, and you're set forever. No internet? No problem!
Helen Evans
Helen Evans
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
DeShawn M. Thompson
Happy User

FAQ

FITS to STP Conversion

What are FITS files?

The FITS (Flexible Image Transport System) format is a standard format used particularly for storing, transferring and processing scientific images from fields such as astronomy. FITS was first launched as an open standard in the early 1980s and has gone through several subsequent upgrades. FITS files contain not just images, but also data related to photometry and spatial calibration, and information about the origin of the image. Similar formats include FIT and FTS.

What are STP files?

STP is a file format used by popular CAD software. STP contains 3-dimensional data saved in the Standard for the Exchange of Product Data (STEP, ISO 10303) file format.

Can reaConverter convert FITS to STP?

Yes! reaConverter instantly converts .fits to .stp 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 FITS 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, 3D models among them. For FITS to STP it replaces the round trip through Blender, a CAD program or an upload form: add the files, pick the output format, and the whole batch converts offline. Engineers, 3D printing shops and product teams use it to move models between CAD, printing, web and documentation 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 FITS to STP online?

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

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

The best way to change FITSs to STPs 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 FITS to STP.

How can I automate FITS to STP 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 FITS files to STP using the command prompt?

reaConverter provides full access to all its features via Windows command line, including a high-performance command-line fits to stp converter for batch processing.

What else can I do with reaConverter?

Convert Gerber imagesChange image color spaceConvert CAD formatsSet file dateChange format settings

Related conversions

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

STP to FITSFITS to JPGFITS to PNGFITS to PDFDCX to STPDDS to STPDIB to STP
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