Extract text from QPJ files
To convert your QPJ file to another format, you need QGIS or other GIS software.
To convert other file formats to the "Coordinate Reference System" file type, you need software like QGIS or a similar tool.
A .QPJ file most frequently serves as a QGIS Projection File, generated by the open-source QGIS software. It is a plain text file containing the Well-Known Text (WKT) string that defines the Coordinate Reference System (CRS) for a geospatial dataset. While standard Shapefiles rely on a PRJ file, QGIS creates the .QPJ to store more precise projection parameters than the often-ambiguous ESRI PRJ format supports. The main issue here is that many non-QGIS GIS tools (like ArcGIS) do not natively recognize the .QPJ extension, relying solely on the PRJ. Users often need to convert or rename these files to ensure their map layers align correctly in other software.
Alternatively, a .QPJ file may be a proprietary project file created by PowerCad, a specialist electrical engineering design tool. These binary files contain complex electrical layouts and calculations. They are strictly locked to the PowerCad ecosystem and cannot be opened by text editors or standard CAD viewers. For QGIS users, the best conversion target is TXT (to view parameters) or standard PRJ (for compatibility). For PowerCad users, the goal is typically archiving as PDF or exporting to DWG for broader CAD interoperability via the original software.
Convert.Guru analyzes your QPJ file, detects the exact format, and lets you read the text inside.
Users also converted DBF, PRJ, QGS, GPKG and QIX files.
If you want to convert QPJ file to SHP, KML, KMZ, GPX, GEOJSON, TOPOJSON, TIF, TIFF, ECW, SID, IMG or DEM, you can use QGIS or similar software from the "GIS Projection Definition" category. In the File menu, look for Save As… or Export….
To convert LAZ, KMZ, DTM, CSV, DEM, PRJ, LAS, GPX, DSM, SHP, DBF or KML files to QPJ, try QGIS or another comparable tool in the "GIS Projection Definition" category.
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 QPJ converter.