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GMT Converter

Stop converting GMT files one by one. reaConverter processes entire folders in one run, with the same settings applied throughout.

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GMT Files
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GMTConverter
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Over 25 years of experience

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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.
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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

Step by step

See It in Action

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.

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Extra Tools

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

From those who tried it

Average User Rating:
Last updated on June 30, 2026
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
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
Before reaConverter, I was the ‘File Conversion Guy’ at work — a title I never asked for and definitely didn’t want. Then I found the Watch Folders feature, and suddenly I was free! Now, files convert themselves while I sip coffee and pretend I'm still working hard. My coworkers think I'm a wizard. Thanks reaConverter, for saving my sanity and boosting my fake productivity!
Ben H.
Ben H.
Overwhelmed Office Hero
I deal with hundreds of images daily, and reaConverter has been a lifesaver. The Watch Folders feature lets me automate file conversions without lifting a finger. I set up a folder for incoming files and it automatically resizes, renames, and converts them into the formats I need. It's like having a personal assistant!
Sarah T.
Sarah T.
Graphic Designer
My photography business relies on fast, accurate processing of images. With reaConverter’s Watch Folder, I drop my RAW photos into a folder and they’re instantly converted to high-res JPEGs with custom naming and watermarking. It’s streamlined my post-processing more than I imagined possible.
Emily R.
Emily R.
Photographer
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

Questions & Answers

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 filesChange image DPIChange format settingsCopy IPTC dataConvert Gerber files

What formats can I convert a GMT file to?
gmt → aigmt → apnggmt → avifgmt → bmpgmt → bpggmt → calgmt → cg4gmt → cgmgmt → cingmt → citgmt → dcmgmt → dcxgmt → ddsgmt → dgngmt → disgmt → drwgmt → dwfgmt → dwggmt → dxfgmt → emfgmt → epigmt → epsgmt → faxgmt → fitsgmt → flifgmt → gbrgmt → gifgmt → glbgmt → gltfgmt → hpggmt → hrugmt → icogmt → iffgmt → igesgmt → igsgmt → jp2gmt → jpeggmt → jpggmt → jxlgmt → jxrgmt → ktx2gmt → mifgmt → mtvgmt → pclgmt → pctgmt → pcxgmt → pdfgmt → pgmgmt → picgmt → pltgmt → pnggmt → ppmgmt → prcgmt → psgmt → psdgmt → qoigmt → qrtgmt → radgmt → rlagmt → sgigmt → shpgmt → stepgmt → stlgmt → stpgmt → svggmt → svgzgmt → tgagmt → tifgmt → tiffgmt → u3dgmt → webpgmt → webpllgmt → wmfgmt → wmzgmt → wpggmt → wrlgmt → x3dgmt → xbmgmt → xpm

Discover More

Beyond GMT conversion

Convert .gmt files in batches of any size, with editing and processing applied along the way. The same tool also handles 700+ other formats, including CAD, medical imaging, and GIS.

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