.CKT File Extension

CircuitMaker File

Developer Altium
3.7  |  14 Votes

What is a CKT file?

Printed circuit board (PCB) design created with CircuitMaker, a circuit layout and design program; can be used to create circuits and test them by running simulations.

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CircuitMaker is no longer developed and has been replaced by Altium Designer, a electronic product design program. Altium Designer provides a unified product development interface and can be used for a more broad range of hardware design that CircuitMaker.

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Programs that open CKT files

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MicroCode CircuitMaker (discontinued)

KeyCreator Design Template

Developer Kubotek
2.0  |  1 Vote

A CKT file may also be a 2D or 3D drawing or model template created with Kubotek KeyCreator, a professional CAD tool. It stores model or drawing data, similar to a .CKD file, but is used to replicate designs with similar characteristics.

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Screenshot of a .ckt file in Kubotek KeyCreator Pro 2021
CKT file open in Kubotek KeyCreator Pro 2021

Kubotek KeyCreator is primarily utilized by professionals in mechanical or industrial engineering industries. It was first known as CADKEY Workshop, but CADKEY was then bought by Kubotek, which renamed the software to KeyCreator in 2003.

KeyCreator comes packaged with several pre-made templates. These CKT files are stored in the following directory:


You can also create your own CKT templates that can be re-used to create CKD designs. To create a CKT file, select File → Save As..., then choose "KeyCreator Template Files (*.CKT)" from the "Save as type" dropdown menu.

How to open a CKT file

You can only open a CKT file with Kubotek KeyCreator. To open a CKT file located in the default template directory, select File → New by Template. You can also open a CKT file by selecting File → Open..., then navigating to the location of the CKT file and selecting it.

Programs that open CKT files


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