Filename Extensions
If you are seeking information about file extensions, then you are in the right place at right time.

Details of extension .prj

5 extension(s) and 2 alias(es) in our database

Below, you can find answers to the following questions:

  • What is the .prj file?
  • Which program can create the .prj file?
  • Where can you find a description of the .prj format?
  • What can convert .prj files to a different format?
  • Which MIME-type is associated with the .prj extension?
.prj
General Project File .prj file icon

General Project File

PRJ file is a General Project file. Various programs use this extension for saved project data.
Detailed description not available
Category: Other files
Application: -
Program name: -
Mime-type: application/octet-stream
Magic bytes (HEX): -
Magic string (ASCII): -
Aliases:
-
Links:
-
Related extensions:
-
.prj
Steinberg WaveLab Workspace .prj file icon

Steinberg WaveLab Workspace

PRJ file is a Steinberg WaveLab Workspace. WaveLab is a digital audio editor by Steinberg aimed at the professional market.
Detailed description not available
Category: Project files
Application: Steinberg WaveLab
Program name: -
Mime-type: application/octet-stream
Magic bytes (HEX): -
Magic string (ASCII): -
Aliases:
-
Links:
-
Related extensions:
Steinberg WaveLab Audio Database
Steinberg WaveLab DVD Audio Project
Steinberg WaveLab Audio Montage
Steinberg WaveLab Basic Audio CD Project
Steinberg WaveLab Basic CD Project
Steinberg WaveLab CD/DVD Label Set
Steinberg WaveLab Backup Plan
Steinberg WaveLab Audio Peak
Steinberg LM-4 Program
.prj
SOCET SET Project File .prj file icon

SOCET SET Project File

PRJ file is a SOCET SET Project File. SOCET SET is a software application that performs functions related to photogrammetry. It is developed and published by BAE Systems.
Detailed description not available
Category: Project files
Application: SOCET SET
Program name: -
Mime-type: application/octet-stream
Magic bytes (HEX): -
Magic string (ASCII): -
Aliases:
-
Links:
-
Related extensions:
SOCET SET Support File
SOCET SET Triangulation File
SOCET SET Ground Point File
SOCET SET Image Point File
SOCET SET Grid Terrain File
.prj
Electric Quilt 3 Project .prj file icon

Electric Quilt 3 Project

PRJ file is an Electric Quilt 3 Project. Electric Quilt is a quilt pattern design software for Microsoft Windows.
Detailed description not available
Category: Project files
Application: Electric Quilt
Program name: -
Mime-type: application/octet-stream
Magic bytes (HEX): -
Magic string (ASCII): -
Aliases:
pj3
Links:
-
Related extensions:
Electric Quilt 7 Project
Electric Quilt 5 Project
Electric Quilt Mini Project
Electric Quilt 6 Project
Electric Quilt 8 Project
EQStitch Project
.prj
ESRI ArcInfo Projections Definition Data .prj file icon

ESRI ArcInfo Projections Definition Data

PRJ file is an ESRI ArcInfo Projections Definition Data. ArcInfo is a complete and extensible geographic information system.
Detailed description not available
Category: Data files
Application: ESRI ArcInfo
Program name: -
Mime-type: application/octet-stream
Magic bytes (HEX): -
Magic string (ASCII): -
Aliases:
-
Links:
-
Related extensions:
ArcInfo Binary Coverage
ArcInfo Band Interleaved by Line Image
ArcInfo Band Interleaved by Line Image
ArcInfo Band Sequential Image
ArcInfo ASCII Export
Geography Markup Language Document
MapInfo Table Document
FME Document
FME Feature Store
.bt
Binary Terrain Data .bt file icon

Binary Terrain Data

BT file is a Binary Terrain Data. Binary Terrain Format is used for elevation data in the VTP (Virtual Terrain Project) software.
Detailed description not available
Category: Data files
Program name: -
Mime-type: application/octet-stream
Magic bytes (HEX): -
Magic string (ASCII): -
Aliases:
prj
Links:
-
Related extensions:
Digital Terrain Elevation Data
Helix Toolkit Compressed BT Data
.pew
IAR Embedded Workbench Project .pew file icon

IAR Embedded Workbench Project

PEW file is an IAR Embedded Workbench Project. IAR Embedded Workbench is a high-performance C/C++ compiler and debugger tool suite for applications based on 8-, 16-, and 32-bit microcontrollers.
Detailed description not available
Category: Project files
Application: IAR Embedded Workbench
Program name: -
Mime-type: application/octet-stream
Magic bytes (HEX): -
Magic string (ASCII): -
Aliases:
prj
Links:
-
Related extensions:
IAR Embedded Workbench Workspace Settings
IAR Embedded Workbench Debugger Settings
IAR Embedded Workbench Window Placement Data
IAR Embedded Workbench Source Browse Information Data

Other types of files may also use the .prj file extension. If you have helpful information about .prj extension, write to us!

Is it possible that the filename extension is misspelled?

We found the following similar extensions in our database:

InterSelect PhotoScan Data
Pioneer CDJ-1000MK3 Index Data
Project64 Saved State File
DVDx Project
Squeak Project
Pariah Game Data
Primo Emulator Image
Campground Master Database
Adobe Premiere Plugin

The .prj filename extension is often given incorrectly!

According to the searches on our site, these misspellings were the most common in the past year:

pjr (1), pdj (1), pru (1), prm (1), pri (1), pr (1), pj (1), orj (1), rpj (1), prn (1), prk (1), prh (1)

Can't open a .prj file?

If you want to open a .prj file on your computer, you just need to have the appropriate program installed. If the .prj association isn't set correctly, you may receive the following error message:

Windows can't open this file:

File: example.prj

To open this file, Windows needs to know what program you want to use to open it. Windows can go online to look it up automatically, or you can manually select from a list of programs that are installed on your computer.

To change file associations:

  • Right-click a file with the extension whose association you want to change, and then click Open With.
  • In the Open With dialog box, click the program whith which you want the file to open, or click Browse to locate the program that you want.
  • Select the Always use the selected program to open this kind of file check box.

Supported operating systems

Windows Server 2003/2008/2012/2016, Windows 7, Windows 8, Windows 10, Linux, FreeBSD, NetBSD, OpenBSD, Mac OS X, iOS, Android