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GMT to Excel

Convert GMT to Excel 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 GMT to XLSX format

Data Security

All processing is done locally in your browser

Standard Format

Output standard XLSX format

gmt to xlsx

Convert gmt to xlsx 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

XLSX → GMTGMT → GEOJSONGEOJSON → GMTXLSX → GEOJSONXLSX → SHPXLSX → KMLGEOJSON → XLSXSHP → XLSX

About

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.

Excel

Microsoft Excel format (.xlsx and .xls) is the most commonly used spreadsheet format. Similar to CSV, coordinate columns in Excel files can be used to create geographic features. XLSX is the modern Office Open XML format, and XLS is the traditional binary format. Excel format offers advantages over CSV including multiple worksheets, data type validation, and formatting.

Conversion trade-offs

GMT: limitations to know

  • Only used in GMT software ecosystem, low universality
  • Does not support complex attributes and style information

Excel: what you gain

  • Non-technical users can directly edit geographic data in Excel
  • Supports large number of rows (XLSX supports over 1 million rows)

Why convert GMT to Excel?

Converting GMT to Excel is one of the most common workflows in GIS. GMT data usually comes from desktop GIS software, government open-data portals, or data exchange with partners, while Excel is what modern tools, web maps, and platforms expect. This converter bridges the two: it reads your GMT files, keeps geometry and attributes intact, and writes clean Excel 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 GMT to Excel converter free?

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

Are coordinate systems preserved when converting GMT to Excel?

By default the output keeps the source coordinate system. If your GMT 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 GMT files at once and each one produces its own Excel output.

Excel at a glance

Key Features

  • Supports multiple worksheets, data types, and formatting with richer expression than CSV
  • Deep integration with Microsoft Office ecosystem
  • Can be converted to GIS formats like GeoJSON and Shapefile via coordinate columns

Common Use Cases

  • Extracting coordinate data from business Excel reports
  • Structured management of batch address and coordinate data

How to Use

  1. 1

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