Open 123 file

The most commonly used .123 file type: Design for circuit boards created with PCB123 software

What is 123 file? Understanding and opening 123 files

Are you facing difficulties opening 123 files on your computer, or wondering exactly what 123 file is?
We've got the best software solutions for opening 123 files effortlessly.

.123 file type #1: Design for circuit boards created with PCB123 software

A 123 file extension is related to the PCB123, a PCB designing program for Windows. A .123 file contains circuit board design.

Further details

The 123 file extension is associated with the PCB123, a PCB (printed circuit board) 3D designing tool for Microsoft Windows operating system developed by Sunstone Circuits.

The 123 file stores circuit board design, including components, supports various types of circuit boards (2,4,6-layer boards) with soldermaks and silkscreen options.

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A free PCB design software

.123 file type #2: Spreadsheet format from Lotus 1-2-3

You can recognize old spreadsheets from Lotus 1-2-3 software by their specific 123 file extension.

Further details

123 file is a spreadsheet file created by Lotus 1-2-3, an early spreadsheet program from IBM's Lotus Software group.

It contains data arranged in rows and columns as well as charts, graphs, and simple formulas. The 123 file format was widely used in the 1980s and 90s, but has since been replaced by other spreadsheet formats, such as .xls and .xlsx from Microsoft Excel.

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Lotus 1-2-3 icon

Lotus 1-2-3

Old spreadsheet program from IBM

What file extension actually is?

Simply put, file extensions are the characters after the dot in the computer file name, so for example document-name.pdf has file extension „pdf“. This helps Windows to identify which program should be used to open the file.

We can help you to open your file

Our database contains a huge list of different file extensions, usually with detailed description and programs that can be used to open or otherwise work with that particular file type.

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Every software listed in our database is verified and ve provide link to the developer or to the software own website, which should hopefuly be enough for you to download the most recent version of the program.