How to open a .OCD file online
From file to map in seconds.
Open your .OCD 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 .OCD 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 .OCD file?
The common language of GPS devices.
An OCD file is a binary map file created by OCAD, a cartography tool used mainly for orienteering maps. Open it with OCAD (commercial) or the free OpenOrienteering Mapper on Windows, macOS, or Linux. The format carries no security risk; it holds vector map data, not executable code.
Programs that open .OCD files
| Full name | OCAD Map File |
|---|---|
| Developer | OCAD AG (Switzerland) |
| First released | 1988 (OCAD 1.0) |
| Category | Maps & GIS |
| MIME type | application/octet-stream |
| Signature | AD 0C |
Related viewers
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Is my .OCD file uploaded anywhere?
No. Your .OCD 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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