GEOO.APP

Shapefile to GMT

Convert Shapefile to GMT online for free — right in your browser. No upload, no sign-up, batch conversion, coordinate systems and attributes preserved.

Features

Fast Conversion

Efficiently convert from SHP to GMT format

Data Security

All processing is done locally in your browser

Standard Format

Output standard GMT format

shp to gmt

Convert shp to gmt online for free — right in your browser. No upload, no sign-up, batch conversion, coordinate systems and attributes preserved.

Drag and drop files or folders, or click to upload

Related Tools

About

Shapefile

ESRI Shapefile is a vector data format developed by ESRI and one of the most widely used formats in GIS. A Shapefile actually consists of multiple files: .shp stores geometry, .shx stores spatial index, .dbf stores attributes, and .prj stores coordinate reference system information. Common practice is to package these files into a ZIP archive for distribution. Shapefile supports three basic geometry types: point, line, and polygon.

GMT

GMT ASCII Vectors is a text-based vector data format used by Generic Mapping Tools (GMT) software. GMT is widely used in earth science research and academic paper map making. The GMT format records geographic features as text lines, each containing coordinates and optional attribute information.

Conversion trade-offs

Shapefile: limitations to know

  • Consists of multiple files, inconvenient to manage and distribute
  • Field names limited to 10 characters with limited attribute types
  • Single file size limited to 2GB

GMT: what you gain

  • Widely used by earth science researchers

Why convert Shapefile to GMT?

Converting Shapefile to GMT is one of the most common workflows in GIS. Shapefile data usually comes from desktop GIS software, government open-data portals, or data exchange with partners, while GMT is what modern tools, web maps, and platforms expect. This converter bridges the two: it reads your Shapefile files, keeps geometry and attributes intact, and writes clean GMT output — entirely in your browser, so your data never leaves your device.

Frequently asked questions

Are my files uploaded to a server?

No. The conversion runs entirely in your browser using WebAssembly — your files never leave your device.

Is the Shapefile to GMT converter free?

Yes, completely free with no sign-up and no usage limits.

Are coordinate systems preserved when converting Shapefile to GMT?

By default the output keeps the source coordinate system. If your Shapefile file uses a projected CRS (like UTM), you can search any EPSG coordinate system by keyword or code and reproject in one step. Note: output formats that require WGS84 by specification (KML, KMZ, GPX) always reproject to WGS84 automatically.

Can I convert multiple files at once?

Yes — drop several Shapefile files at once and each one produces its own GMT output.

GMT at a glance

Key Features

  • Native format for Generic Mapping Tools (GMT)
  • Plain text format, human-readable

Common Use Cases

  • Map making and geospatial data visualization in scientific papers

How to Use

  1. 1

    Upload your Shapefile file — drag and drop it onto the page, or browse from your device. You can add several files at once for batch conversion.

  2. 2

    The conversion runs automatically in your browser. No upload, no server — your data stays on your device the entire time.

  3. 3

    Download the GMT file. Each input produces its own output, ready to use in your GIS, web map, or archive.