Convert SIM to FITS

For a hassle-free and effective conversion of your SIM files to FITS format, it is recommended to utilize a trusted software tool like reaConverter.

reaConverter is a fast offline SIM to FITS converter. Whether you need to convert hundreds or thousands of SIM files, reaConverter can handle it all.

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How to Convert Multiple SIM Files to FITS?

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.

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Install reaConverter

2. Load your SIM files

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

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

Load your SIM files into reaConverter

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.

Select FITS as output format

4. Start SIM to FITS conversion

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

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

SIM to FITS offline

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

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Do more with your files

Converting SIM 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.

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User Reviews

Average User Rating:
Last updated on April 23, 2025
"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
"Finally an app that actually opens my weird files! Saves me from format frustration daily."
Kyle Brooks
Happy User
"This converter delivers exceptionally quick format conversions with reliable results every time."
Brian White
Happy User
"Security was our top concern when evaluating file conversion tools. reaConverter’s offline mode and role-based access controls let us lock it down for sensitive environments. No unexpected network calls or bloat — just clean, fast conversions. Even passed our pen-testing scans without a hitch."
Marcus White
Healthcare IT
"An ultra-fast solution for minimizing file sizes. The entire conversion process takes just 3 minutes!"
Logan B.
Satisfied Customer

SIM to FITS Conversion: FAQ

What are SIM files?

The SIM extension is associated with a rare and obsolete bitmap image format called Aurora. This might be linked to some old models of a 3D animation tool pack under the same name. SIM files are considered uncommon and they are difficult to open using regular image viewers.

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.

Can reaConverter convert SIM to FITS?

Yes! reaConverter instantly converts .sim 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 SIM to FITS online?

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

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

The best way to change SIMs 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 SIM to FITS.

How can I automate SIM 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 SIM 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 sim to fits converter for batch processing.

What else can I do with reaConverter?

Convert vector imagesConvert picture color spaceConvert DICOM imagesResize photoChange file date

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