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CKD PTN
File conversion

Convert CKD to PTN

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Is it possible to convert CKD to PTN?
Yes - CKD converts to PTN.

PTN (part/pattern) is an older CADKEY-era format. KeyCreator can convert between .ckd and legacy CADKEY formats internally.

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Tested on macOS, Windows & Linux
Last verified Oct 2026

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How to convert CKD to PTN

Converting a .CKD file to .PTN lets you open the content in software that prefers the .PTN format, though some details may change compared with the original. The programs listed below open .CKD files and can save or export them to .PTN (or a closely related format). One of them is CADKEY: CADKEY was a professional computer-aided design application originally developed by Cadkey Inc. and later maintained by Kubotek USA Inc. It provided 2D….

A full step-by-step guide for this conversion is on the way; the information above is drawn straight from our database.

Programs that convert CKD

CADKEY

About these formats

.CKD CADKEY / KeyCreator Design File

A CKD file is the native design file of CADKEY and its active successor KeyCreator, a mechanical CAD application from Kubotek Kosmos. It stores 3D and 2D CAD geometry. To open one, use the…

Open .CKD details →
.PTN CADKEY pattern file

A .PTN file is associated with CADKEY pattern, a data file.

Open .PTN details →