How to open a .L01 file online
From file to map in seconds.
Open your .L01 file
Drag it onto the box or click to choose it from your device. It opens on your computer.
See it on the map
Points, lines and areas from your .L01 file appear on an interactive map. Click any feature to read its details.
Read the stats
Check distance, elevation gain and loss, the bounding box and a height profile linked to the map.
What is a .L01 file?
The common language of GPS devices.
An .L01 file is an ARC Digitized Raster Graphics file used for geographic information system purposes. It contains raster image data typically utilized for mapping and spatial analysis. These files are opened and viewed using Global Mapper.
Programs that open .L01 files
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Is my .L01 file uploaded anywhere?
No. Your .L01 file is read by your browser and never sent to us. Only the background map tiles are loaded from OpenStreetMap, which sees which map area you're looking at, not your data.
How is the elevation gain calculated?
We add up every climb between track points, ignoring tiny wiggles of less than 3 metres that come from GPS noise. That's close to what Strava and Garmin report; barometric devices may differ slightly.
How do I open a Shapefile?
A Shapefile is several files. Drop the whole .zip, or select the .shp, .dbf and .prj files together. With only the .shp you'll see the shapes but no attributes.
Can I convert GPX to KML or GeoJSON?
Use Export GeoJSON to save everything you see. GPX ↔ KML conversion is part of our upcoming converter.
My CSV has coordinates. Will it work?
Yes, if it has columns named like lat/latitude/y and lon/lng/longitude/x. Every row becomes a point with the other columns as properties.
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