Convert B&W to FITS

Online converters slow with large B&W files? reaConverter converts to FITS on your desktop, with no upload and no queue.

Need to convert B&W to FITS? reaConverter handles batch conversion with ease, processing hundreds of files at once while preserving quality. Your files never leave your machine. No third-party servers, no privacy concerns.

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B&W to FITS
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How to Convert Multiple B&W Files 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.

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Install reaConverter

2. Load your B&W files

Launch reaConverter and load the B&W files you want to convert. Add a few files or thousands, batch processing handles them all.

Drag-and-drop B&Ws directly into reaConverter or use the folder browser to load entire directories.

Load your B&W files into reaConverter

3. Select FITS as output format

Set FITS as output format and select where to save your converted files. Customize quality settings if needed.

Select FITS as output format

4. Start B&W to FITS conversion

Press Convert to begin processing. You can watch the progress or minimize and let it run in the background.

Start Conversion

Your converted FITS files will appear in the destination folder as soon as processing completes.

B&W to FITS Converter

reaConverter offers the fastest, simplest solution for converting your B&W 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 B&W 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.

Conversion features
Image editing

User Reviews

Average User Rating:4.8
Last updated on August 08, 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
"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
"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

B&W to FITS Conversion: FAQ

What are B&W files?

B&W is a black-and-white image file created with Image Lab, an image analysis software program used in several scientific domains. Image Lab allows the creation, processing and editing of colour and grayscale images, and includes a wide variety of functions. B&W is considered a rare format and can be converted to more accessible extensions for easier storing and transferring.

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 B&W to FITS?

Yes! reaConverter instantly converts .b&w 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 B&W to FITS online?

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

How can I turn B&W files into FITS on my computer?

The best way to change B&Ws 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 B&W to FITS.

How can I automate B&W 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 B&W 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 b&w to fits converter for batch processing.

What else can I do with reaConverter?

Copy EXIF dataConvert CAD formatsSet picture bit depthSet file dateConvert DICOM images

B&W and FITS: related conversions

Other ways to convert B&W files, and other sources that convert to FITS.

B&W to JPGB&W to PNGB&W to PDFABC to FITSABIC to FITSABS to FITS
All B&W conversionsAll FITS conversions

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