CIRCUIT file format description

Many people often share .circuit files without providing instructions on how to use them. This can make it difficult for users to determine which program is compatible for editing, converting, or printing .circuit files. To address this issue, we have created this page to offer assistance and guidance on handling .circuit files. We provide information on compatible software, editing instructions and conversion options to help users effectively interact with .circuit files.

Our aim is to simplify the process and promote seamless use of the .circuit file format.

1 filename extension(s) found in our database.

.circuit - KTechlab Circuit Design

The CIRCUIT document files are related to KTechlab. The CIRCUIT file is a KTechlab Circuit Design. KTechlab is an Open Source IDE for electronic and PIC microcontroller circuit design and simulation.

Document files
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KTechlab Circuit Design related extensions:
OpenBook Document
Japanese Industry Standard Text
Quick Pallet Maker Data
GelEval for Mac Document
.drawio Diagram Document
Microsoft Money VXF Data

Naturally, other applications may also use the .circuit file extension. Even harmful programs can create .circuit files. Be especially cautious with .circuit files coming from an unknown source!

Can't open a .circuit file?

When you double-click a file to open it, Windows examines the filename extension. If Windows recognizes the filename extension, it opens the file in the program that is associated with that filename extension. When Windows does not recognize a filename extension, you receive the following message:

Windows can't open this file:


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 one from a list of programs that are installed on your computer.

To avoid this error, you need to set the file association correctly.

Operating systems

At, we strive to provide a seamless user experience by ensuring compatibility with a wide range of operating systems. The following is a comprehensive list of the operating systems currently supported by

Windows XP/Vista, Windows 7/8/10, Windows 11, CentOS, Debian GNU/Linux, Ubuntu Linux, FreeBSD, macOS, Mac OS X, iOS, Android

If you find the information on this page useful, please feel free to link to this page.

If you have useful information about the .circuit file format, then write to us! >> CIRCUIT file