GRD → DCM · Windows

Convert GRD to DCM

GRD to DCM for whole archives of tiles, layers or survey files at once, with nothing uploaded and no account required.

GRD to DCM 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. No command line and no scripting, unlike the usual ogr2ogr route.

DownloadGRD to DCM ConverterConvert
GRD to DCM
Online
.grd.DCM
4.8

Converting files since 2001

Runs offline — nothing uploaded

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How to Convert Multiple .grd Files to .dcm?

1. Download and Install reaConverter

reaConverter is a standalone Windows app — download, install, and start converting GRD files in under two minutes.

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Install reaConverter

2. Load your GRD files

Open reaConverter and import your .grd 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 GRD files into reaConverter

3. Select DCM as output format

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

Select DCM as output format

4. Start GRD to DCM conversion

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

Start Conversion

Conversion complete? Your DCM 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 GRD files into DCM without GIS software - all files processed on your PC for maximum privacy and speed.

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Technical note

GRD to DCM: what carries over and what does not

Every cell in a GRD 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. DCM 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 DCM 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 DCM 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 GRD data has GIS software. reaConverter renders it to DCM for a report, an email or a slide, and handles a whole folder in one run.

  • Render every file in a folder to DCM 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
As a researcher dealing with thousands of DICOM images, reaConverter’s command-line support has automated our workflow. We now convert DCM to PNG in bulk with perfect consistency. The scripting API is incredibly powerful.
David Müller
David Müller
Biomedical Engineer
Converting medical imaging files for patient records and consultations requires precision and reliability. reaConverter handles DICOM to JPEG conversion with perfect fidelity, including proper contrast maintenance and annotation preservation. The batch processing has reduced our administrative workload while maintaining strict compliance standards.
Dorothy Carter MD
Dorothy Carter MD
Medical Practice
Lifesaver for medical imaging workflows! reaConverter effortlessly transforms DICOM files into diagnostic-ready PNGs while preserving all patient metadata and windowing settings. Now our radiologists review scans 3x faster without losing critical DICOM tags!
Dr. Michael J. Anderson
Dr. Michael J. Anderson
Satisfied Customer
Finally an app that actually opens my weird files! Saves me from format frustration daily.
Kyle Brooks
Kyle Brooks
Happy User
This converter delivers exceptionally quick format conversions with reliable results every time.
Brian White
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
Marcus White
Healthcare IT

FAQ

GRD to DCM Conversion

What are GRD files?

GRD is a file extension shared by several grid formats, which store a map as a regular net of cells with one value in each cell. The best known is the Surfer grid of Golden Software, used for contour maps and 3D surfaces of elevation, geology, and other measured data, and it exists in text and binary versions. The Northwood numeric grid, created for the Vertical Mapper add-on and now associated with MapInfo, serves a similar purpose and is common in mapping and telecom planning. The R programming environment uses .grd for the header of its native raster files, with the values kept in a separate .gri file. Because the same extension covers all of these, the contents of a file, not its name, tell which one it is.

What are DCM files?

A DCM file is a DICOM file, meaning it follows the Digital Imaging and Communications in Medicine (DICOM) standard for storing, transmitting, and managing medical imaging data. This standard ensures interoperability between medical imaging equipment and software, allowing images to be shared across scanners, servers, workstations, and network systems. DCM files are most commonly used in hospitals, clinics, and private medical practices that rely on medical imaging equipment such as CT, MRI, and ultrasound devices.

Can reaConverter convert GRD to DCM?

Yes! reaConverter instantly converts .grd to .dcm 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 GRD to DCM 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 GRD to DCM online?

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

How can I turn GRD files into DCM on my computer?

The best way to change GRDs to DCMs 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 GRD to DCM.

How can I automate GRD to DCM 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 GRD files to DCM using the command prompt?

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

What else can I do with reaConverter?

Convert vector imagesChange image DPITrace images to vectorSet image bit depthConvert CAD formats

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