LOS → FITS · Windows

Convert LOS to FITS

Need LOS data as FITS for someone without GIS software? reaConverter handles the conversion offline and in bulk.

reaConverter transforms LOS files to FITS quickly and reliably. Drag in folders, set your options, click Convert, done. No cloud accounts, no file uploads, no complicated setup. Just install and start converting. No command line and no scripting, unlike the usual ogr2ogr route.

.los.FITS
4.8

Converting files since 2001

Runs offline — nothing uploaded

Read what our users say →

How to Convert Multiple .los Files to .fits?

1. Download and Install reaConverter

First, grab reaConverter from the download button below. Installation is fast, and the software runs offline — no account or signup needed.

2. Load your LOS files

Load your LOS files into reaConverter. You can add individual files or point to folders, and the software will queue everything automatically.

Select LOSs from a folder or drag-and-drop them directly into the reaConverter window.

Load your LOS files into reaConverter

3. Select FITS as output format

Pick FITS as output format and choose the destination folder where you want to save new .fits files.

Select FITS as output format

4. Start LOS to FITS conversion

Press the Convert button and reaConverter takes care of the rest. Processing time depends on file size and volume.

Start Conversion

After processing, find all your new .fits files in the output location. The log shows details for each conversion.

Step by step

How It Works

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

Technical note

How LOS and FITS differ in practice

LOS is not a map but a correction grid. Each cell holds the small offset needed to move coordinates from one datum to another, or the height of the geoid, the surface that turns a GPS height into a height above sea level. Survey and GIS software applies it silently during a coordinate transformation. Rendered as FITS, it becomes a smooth picture of those offsets, useful for documentation or teaching, while the transformation itself still needs the original LOS.

Map Data Workflow

Turn GIS data into something anyone can open

A map saved as FITS opens on any computer and any phone. reaConverter produces those from LOS in batch, entirely offline.

  • 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
An excellent program! I use it regularly in my work - it supports nearly every file format imaginable. The interface is intuitive and runs flawlessly every time.
Roger Cook
Roger Cook
Happy User
For agencies handling confidential data, reaConverter eliminates cloud-upload risks while delivering unmatched conversion reliability. Our team uses it both in-office and remotely with identical results.
Jamal Bailey
Jamal Bailey
Satisfied Customer
Our volunteer team uses reaConverter to prepare images for fundraising campaigns. The learning curve was minimal, and the results are professional-grade. The customer support team even helped us customize a workflow — fantastic service!
Jason P. Bailey
Jason P. Bailey
Non-Profit Coordinator
Your solution was buried deeper in search results than it should be. After struggling with unclear alternatives, I found your guides — finally, instructions that made sense for a first-time user like me. Excellent work!
Richard E. Miller
Richard E. Miller
Satisfied Customer

FAQ

LOS to FITS Conversion

Can reaConverter convert LOS to FITS?

Yes! reaConverter instantly converts .los 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 LOS 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 LOS to FITS online?

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

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

The best way to change LOSs 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 LOS to FITS.

How can I automate LOS 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 LOS 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 los to fits converter for batch processing.

What else can I do with reaConverter?

Convert RAW filesVectorize imagesChange bit depthConvert medical imagesPicture resizer

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