TPO Converter

Extract text from TPO files

Select File
Drop or upload your .TPO file

Online File Converter

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How to extract text from your TPO file

Click the "Select File" button above, and choose your TPO file.
You’ll see a preview, if available.
Click the "Convert file to..." button to extract text information.

Convert TPO to another file type

To convert your TPO file to another format, you need National Geographic TOPO! or other GIS software.

Convert a file to TPO

To convert other file formats to the "GPS Tracklog File" file type, you need software like National Geographic TOPO! or a similar tool.

About TPO files

The .tpo extension is primarily associated with National Geographic TOPO!, a discontinued mapping software series popular among hikers and outdoor enthusiasts for planning trips. These files contain proprietary geospatial data, including waypoints, routes, and tracklogs overlaid on USGS topographic maps.

The Problem: Since National Geographic ended support for the TOPO! series in 2013, opening these files is difficult. The format is a closed binary container, meaning you cannot simply open it in a text editor or import it directly into modern tools like Google Earth, Strava, or Garmin BaseCamp. Users often find their historical trek data locked inside this obsolete format.

The Solution: To salvage your data, you must convert the .tpo file to an open standard.

For GPS Devices & Apps: Convert to GPX (GPS Exchange Format). This is the universal standard for sharing data between GPS units (Garmin, Magellan) and fitness apps.
For Google Earth: Convert to KML or KMZ to visualize your routes in 3D.
For Analysis: Convert to CSV to view coordinate data in a spreadsheet.

Note: A secondary, unrelated use of .tpo is as a Receiver Option Authorization File for Topcon GNSS receivers. These are encrypted license files used to unlock specific hardware features (like GLONASS tracking) and cannot be converted to other formats.

Convert.Guru analyzes your TPO file, detects the exact format, and lets you read the text inside.

Users also converted FMF, NXS and RML files.

FAQ

If you want to convert TPO file to , you can use National Geographic TOPO! or similar software from the "Topographic Map Data" category. In the File menu, look for Save As… or Export….

To convert files to TPO, try National Geographic TOPO! or another comparable tool in the "Topographic Map Data" category.

The TPO Converter Story

The history of Convert.Guru began over 25 years ago in California with Tom Simondi’s file-format database. A former contributor to Space Shuttle development and a software pioneer of the 1980s, Simondi established a trusted resource for file type analysis that was even referenced by Microsoft Windows XP. Today, we use modern technology to process and convert thousands of file formats while continually improving our TPO converter.