GTX → BMP · Windows

Convert GTX to BMP

Convert GTX to BMP without installing QGIS or writing ogr2ogr commands. reaConverter reads GIS data directly and works through whole folders in one pass.

Looking to change GTX files to BMP format? reaConverter makes it simple — add your files, select output format, and convert entire folders in one click. Runs entirely on your hardware for maximum speed, so you never wait for uploads or server queues. Surveyors and planners use it to pass GIS data to colleagues who work in other software.

.gtx.BMP
4.8

Converting files since 2001

Runs offline — nothing uploaded

Read what our users say →

How to Convert Multiple .gtx Files to .bmp?

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 GTX files

Start reaConverter and add your .gtx files. The software processes everything locally, so your files never leave your computer.

Use drag-and-drop, folder browser, or right-click conversion from Explorer.

Load your GTX files into reaConverter

3. Select BMP as output format

Choose BMP and set a destination folder. Before passing the result on, open it in a GIS once and confirm it lands in the right place on the map.

Select BMP as output format

4. Start GTX to BMP conversion

Click Convert to start the batch. reaConverter processes files quickly and shows you the status of each one.

Start Conversion

Once done, reaConverter shows a summary. Click 'Show converted files' to jump straight to your BMP output.

Step by step

How It Works

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

Technical note

Before you convert GTX to BMP

GTX 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 BMP, it becomes a smooth picture of those offsets, useful for documentation or teaching, while the transformation itself still needs the original GTX. GTX carries georeferencing: a coordinate reference system, and the real-world position and ground size of every pixel. BMP has nowhere to record any of that. The picture transfers intact, the location does not, so the output cannot be dropped onto a map afterwards without being placed by hand. Keep the GTX original if the data still has to go back into a GIS.

Map Data Workflow

Turn GIS data into something anyone can open

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

  • Render every file in a folder to BMP with the same size and settings
  • Set DPI and output dimensions before the run, not afterwards
  • Stamp a text watermark, such as a project name or a date, on every image
  • 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 28, 2026
Perfect for quick conversions! When I just need to turn a few BMPs into JPGs, this online tool saves me from installing software. Three clicks and done - couldn't be simpler!
Rev. David M. Johnson
Rev. David M. Johnson
Happy Online User
This online converter works perfectly for small batches of files. I occasionally need to convert BMP to JPG, and it doesn't make sense to install software for such simple tasks. It's much easier to just visit the site, click a couple buttons, and get the same quality result in seconds.
Christopher Brown
Christopher Brown
Satisfied Customer
The best online service for quick file conversion to JPG format - at least the best I've found! Just upload your file, select the format, click a button, and you're done. An excellent free tool that just works!
Olivia Wilson
Olivia Wilson
Happy Online User
Hands down the fastest JPG converter online! Upload → Select format → Download. Free, simple, and gets the job done in seconds.
Lin Zhang
Lin Zhang
Happy Online User
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
I'm really impressed with this software - it converts files between formats incredibly fast!
Lin Zhang
Lin Zhang
Happy User

FAQ

GTX to BMP Conversion

Can reaConverter convert GTX to BMP?

Yes! reaConverter instantly converts .gtx to .bmp 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 GTX files 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 GTX to BMP 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 GTX to BMP online?

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

How can I turn GTX files into BMP on my computer?

The best way to change GTXs to BMPs 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 GTX to BMP.

How can I automate GTX to BMP 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 GTX files to BMP using the command prompt?

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

What else can I do with reaConverter?

Convert CAD formatsSet file dateConvert RAW formatsChange format settingsCopy EXIF data

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Free trial · Windows 10/11 · v8.0.254 · Files never leave your computer

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