SG-GRD-Z → FITS · Windows

Convert SG-GRD-Z to FITS

Need SG-GRD-Z data as FITS for someone without GIS software? reaConverter handles the conversion offline and in bulk.

reaConverter transforms SG-GRD-Z 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.

DownloadSG-GRD-Z to FITS ConverterConvert
SG-GRD-Z to FITS
Online
.sg-grd-z.FITS
4.8

Converting files since 2001

Runs offline — nothing uploaded

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How to Convert Multiple .sg-grd-z 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.

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Install reaConverter

2. Load your SG-GRD-Z files

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

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

Load your SG-GRD-Z 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 SG-GRD-Z 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 SG-GRD-Z files into FITS without GIS software - all files processed on your PC for maximum privacy and speed.

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Technical note

How SG-GRD-Z and FITS differ in practice

Every cell in an SG-GRD-Z file holds a measurement rather than a colour, usually elevation in metres, running from sea level up to whatever the highest point in the tile happens to be. FITS stores brightness, so the conversion stretches that range across a grey or colour scale. What you get is a readable picture of the terrain, and it is the right thing for a relief map or a figure. What you no longer have is the data: sampling a pixel in the FITS returns a shade, not an altitude. Missing cells in an elevation grid, such as water, radar shadow or the edge of a survey, are not empty: they hold a sentinel value, -32768 in SRTM, -32767 in DTED and very often -9999 in ESRI grids. Counted as a real height, that value stretches the scale so far that the actual terrain collapses into a few near-identical shades. When a FITS output looks flat and washed out, a void treated as data is the usual cause.

Map Data Workflow

Turn GIS data into something anyone can open

Not everyone who needs to see SG-GRD-Z 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
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

SG-GRD-Z to FITS Conversion

What are SG-GRD-Z files?

SG-GRD-Z is a compressed grid file of SAGA GIS, a free, open-source geographic information system used for terrain analysis, hydrology, soil science, and climate studies. A grid is a map made of equal cells with one value in each, such as an elevation model. The older SAGA format keeps such a grid in several separate files: one with the values, one with the description, and often one with the projection. A file with this extension packs all of them into a single archive, which is more convenient to store, copy, and send, and which takes less space because the data are compressed. The archive can be opened in SAGA GIS like an ordinary grid, without unpacking it by hand.

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 SG-GRD-Z to FITS?

Yes! reaConverter instantly converts .sg-grd-z 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 SG-GRD-Z 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 SG-GRD-Z to FITS online?

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

How can I turn SG-GRD-Z files into FITS on my computer?

The best way to change SG-GRD-Zs 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 SG-GRD-Z to FITS.

How can I automate SG-GRD-Z 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 SG-GRD-Z 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 sg-grd-z to fits converter for batch processing.

What else can I do with reaConverter?

Convert RAW filesTrace images to vectorChange bit depthConvert vector filesChange picture DPI

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