GMT Converter

Our fast and easy GMT file converter will help you avoid spending countless hours trying to figure out how to convert multiple .gmt files at once.

Download
reaConverter
Convert
GMT Files
Online
GMTConverter

How to Convert .gmt Files in Bulk

1. Install reaConverter

Download reliable GMT conversion software to convert multiple .gmt files and folders in one go.
reaConverter logo
Install reaConverter

2. Select GMT Files

Select GMTs from a folder or drag and drop them into reaConverter, then choose the desired output format.
reaConverter - Load GMT files

3. Start Conversion

Click Convert to start the bulk conversion of all selected GMT files. The process will begin right away.
reaConverter - Start GMT conversion

Convert GMT on your PC

For quick and effortless GMT file handling on your PC, reaConverter offers powerful conversion tools with batch processing. Best of all, it works entirely offline — ensuring your sensitive data never leaves your computer.

Download reaConverter

Do more with your files

Converting GMT files for use in a larger project? reaConverter offers many ways to process files, so you can customize them according to your requirements.

Our range of editing options includes auto-processing options such as auto-rotate, auto-crop, watermarking and more. Change Color Space, copy Metadata, set DPI, manage ICC Profile, control Bit Depth.

Conversion features
Image editing

User Reviews

Average User Rating:
Last updated on September 29, 2025
"5/5⭐ Finally! Does what it promises - converts AND tweaks images without complicated menus. Perfect for quick jobs."
J. Mitchell
J. Mitchell
Satisfied Customer
"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
"We receive artwork in all kinds of formats from clients. reaConverter takes care of converting them all to print-ready specs automatically using Watch Folders. It reduces errors, saves us time, and has improved our turnaround time with customers. Incredibly powerful software."
Michael D.
Michael D.
Print Shop Owner
"reaConverter's automation tools have completely changed how I manage my projects. I often work with large batches of illustrations and used to spend hours converting and organizing them. Now, with Watch Folders, I just set the rules once and everything is handled automatically, exactly how I need it. This is pro-level automation made simple."
Chloe M.
Chloe M.
Freelance Illustrator
"I run a small design agency, and reaConverter has saved me countless hours. The batch processing is lightning-fast, and the ability to convert hundreds of files into different formats at once is a game-changer. Highly recommend!"
Mark T.
Mark T.
Satisfied Customer
"Exactly what I needed! Simple, fast, and no bloat. I use reaConverter Lite to resize and convert batches of images for documents. The presets make it super easy, and everything works smoothly."
Mark Jones
Mark Jones
Happy User

GMT files: Frequently Asked Questions

What are GMT files?

The .gmt file format is a text-based file format used for storing data related to geographic information. It stands for Generic Mapping Tools and is primarily used by scientists and researchers in the field of geology, geophysics, and oceanography for data visualization and analysis. The .gmt format includes information related to the location and attributes of various features such as coastlines, mountains, and rivers, as well as symbols and labels used to represent these features on a map. It can be used with various software tools, including the Generic Mapping Tools software suite.

Can reaConverter open GMT files?

reaConverter fully supports the GMT file format – open, edit, and export GMT files to any other popular file format with ease.

How do I change GMT to another format?

reaConverter is a user-friendly tool for converting GMT files. Once installed on your computer, it allows you to convert all your .gmt files at once with just a few clicks. You can even convert gmt images directly from Windows Explorer using the right-click menu — fast and convenient.

Can I convert GMT online?

If you only want to convert a few GMT files, you are welcome to try our free online GMT converter.

How can I turn GMT files on my computer to another format?

The best way to convert GMT files on your PC is to get 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 GMT.

How can I automate GMT files conversion?

reaConverter supports all the essential automation features, such as right-click сonversion and Watch Folders, for the most efficient automated file conversion in any software of its kind.

Can I convert GMT files using scripts or the command-line interface?

reaConverter provides full access to all its features from the Windows command-line shell, including the command-line gmt converter.

What else can I do with reaConverter?

Convert vector filesConvert picture color spaceChange format settingsChange image DPIConvert DICOM files

What formats can I convert a GMT file to?
ai  apng  avif  bmp  bpg  cal  cg4  cgm  cin  dcx  dds  dgn  dis  drw  dwf  dwg  dxf  emf  epi  eps  fax  fits  flif  gbr  gif  hpg  hru  ico  iff  iges  igs  jp2  jpeg  jpg  jxl  jxr  mif  mtv  pcl  pct  pcx  pdf  pgm  pic  plt  png  ppm  prc  ps  psd  qoi  qrt  rad  rla  sgi  shp  svg  svgz  tga  tif  tiff  webp  webpll  wmf  wmz  wpg  wrl  xbm  xpm 

Discover more

Explore our efficient GMT file converter that saves you time and effort by converting multiple .gmt files into different formats.
Download
reaConverter
Buy Now
reaConverter software