KaleidaGraph Plot file
File type: Various data file
The .qpct file extension identifies a KaleidaGraph plot file.
The file belongs to KaleidaGraph, scientific graphing and data-analysis software, and contains plot data used by the application.
File type category:
Various data file
Date updated: October 2, 2026
KaleidaGraph is graphing and data-analysis software from Synergy Software, used by scientists to create and work with scientific plots. A QPCT file stores plot information for use in KaleidaGraph.
QPCT is a native KaleidaGraph file rather than a general-purpose image format. Its contents are intended to be interpreted by the KaleidaGraph application and may not be usable in another program without export.
The file is associated with the Apple macOS and Mac OS X versions of KaleidaGraph. The format is tied to the software, so compatibility may depend on the KaleidaGraph release that created the file.
Open a QPCT file with KaleidaGraph on macOS or Mac OS X. Start KaleidaGraph and use its Open command, or open the file directly if the operating system has associated the extension with the application.
If the file does not open, try the KaleidaGraph release that created it or a compatible release. Renaming the extension does not convert the file.
Open the file in KaleidaGraph and use the application's export or save options to produce a supported graphics or data file, when the required content can be exported.
The available export formats depend on the KaleidaGraph release and on whether the plot or its underlying data is being exported.
Software applications that handle other tasks involving qpct files:
Apple macOS / Mac OS X
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