CostX data exchange file
File type: Various data file
The exf file extension identifies a CostX data exchange file used by CostX.
The file stores data in CostX's default exchange format.
Found 3 different file type records with the same exf filename suffix.
File type category:
Various data file
Date updated: October 28, 2026
The exf file extension is associated with CostX, construction estimating software developed by Exactal Technologies. CostX is used to prepare estimates and bills of quantities for construction projects.
An exf file contains data in the default CostX data exchange format.
CostX is available for Microsoft Windows, and the exf format is associated with that Windows version of the software.
Open an exf file with CostX on Microsoft Windows. Use CostX's file-opening or import command to load the data.
Because the format is intended for CostX, other applications may not interpret the file correctly.
Use CostX to export the data from an exf file to another format supported by the software.
File type category:
Various data file
Date updated: January 28, 2019
The exf file extension is related to ExactFile file integrity verification tool for Microsoft Windows operating system, developed by StudyLamp Software.
The exf file used in the program contains checksum digest data.
Probably not meant to be accessed by the user.
Probably cannot be converted to anything else.
Software applications that handle other tasks involving exf files:
Microsoft Windows
File type category:
Digital camera RAW file
Date updated: April 27, 2018
The exf file extension is also related to Exchangeable Image File Format.
Exif (despite being an acronynm it is usually written as "Exif" rather than "EXIF") is a file format developed by the Japan Electronic Industry Development Association (JEIDA) principally for use by digital cameras. The specification uses the JPEG, TIFF and RIFF formats, with the addition of metadata tags.
There are some issues with the Exif format, including:
Some programs like Photo Studio can still work with EXF format.
Probably can be exported to other formats.
Software applications that can open exf files:
Microsoft Windows
Software applications that can edit exf files:
Microsoft Windows
Software capable of saving exf files:
Microsoft Windows
Software applications that handle other tasks involving exf files:
Microsoft Windows
English
