GRD → ICO · Windows

Convert GRD to ICO

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

Tired of converting GRD files one at a time? reaConverter processes entire folders to ICO automatically. Handles large batches reliably without crashes or timeouts. Works without QGIS or ArcGIS, so GIS data can be converted on any office PC.

.grd.ICO
4.8

Converting files since 2001

Runs offline — nothing uploaded

Read what our users say →

How to Convert Multiple .grd Files to .ico?

1. Download and Install reaConverter

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

2. Load your GRD files

Launch reaConverter and drop in your GRD files. The software queues everything for batch processing with consistent settings.

Add files by dragging them in, browsing folders, or using the right-click menu from Windows Explorer.

Load your GRD files into reaConverter

3. Select ICO as output format

Select ICO from 800+ supported output formats. Choose your destination folder and adjust settings to match your needs.

Select ICO as output format

4. Start GRD to ICO conversion

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

Start Conversion

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

Step by step

How It Works

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

Technical note

Before you convert GRD to ICO

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. ICO 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 ICO 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 an ICO 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

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

  • Render every file in a folder to ICO 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
An efficient all-in-one solution for image conversion and light editing, designed for maximum user-friendliness.
Elena Anderson
Elena Anderson
Happy User
Enable shell integration for lightning-fast file conversions directly from Windows Explorer.
R. Lewis
R. Lewis
Happy User
After 200+ conversions on my budget laptop (i3-1115G4/4GB RAM/Win11), reaConverter outperforms heavyweight tools. Zero crashes, low CPU usage during batch processing, and no internet dependency - exactly what professionals need.
Walter Morgan
Walter Morgan
Satisfied Customer
This software just works! My old laptop can’t handle Photoshop, but reaConverter flies through conversions without breaking a sweat. Wi-Fi gone? Still strong!
Robert Williams
Robert Williams
Happy User
Rare software that actually does it all! Converts anything, beautiful interface, and never lets me down. A must-have!
Henry R.
Henry R.
Happy User
For cross-platform compatibility, JPEG remains the gold standard. reaConverter’s precision conversions ensure perfect results every time, whether for presentations, websites, or client deliverables.
Paul Baker
Paul Baker
Happy User

FAQ

GRD to ICO Conversion

Can reaConverter convert GRD to ICO?

Yes! reaConverter instantly converts .grd to .ico 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 ICO 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 ICO online?

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

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

The best way to change GRDs to ICOs 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 ICO.

How can I automate GRD to ICO 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 ICO using the command prompt?

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

What else can I do with reaConverter?

Convert medical imagesResize picturesChange format settingsCopy metadata (EXIF, IPTC)Convert GIS files

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Beyond format conversion

Batch conversion, editing, and processing across 800+ formats, from RAW and HEIC to DICOM, DWG, and PDF. Everything runs locally, with no cloud and no upload limits.

Free trial · Windows 10/11 · v8.0.250 · Files never leave your computer

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