Open 123 file

123 files: what are they and how do I open them?

Unknown file icon Are you facing difficulties opening unknown files on your computer, or wondering exactly what this file is?
We've got the information and best software solutions for opening these 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.

Open file with:

PCB123

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 The 123 file format was widely used in the 1980s and 90s, but has since been replaced by other spreadsheet formats, such as .xls and .xlsx from Microsoft Excel.

Open file with:

Lotus 1-2-3 icon

Lotus 1-2-3

Old spreadsheet program from IBM

Corel Quattro Pro icon

Corel Quattro Pro

A spreadsheet software application from Corel

LibreOffice Calc icon

LibreOffice Calc

Full-featured spreadsheet tool from LibreOffice suite

Apache OpenOffice Calc (OpenOffice.org Calc) icon

Apache OpenOffice Calc (OpenOffice.org Calc)

Spreadsheet program from OpenOffice.org productivity suite

ABC Amber Lotus Converter

A converter for older Lotus documents

What is the meaning of a file extension?

File extensions are characters that appear after the dot in a computer file's name. For example, the file "unknown-file.123" has the file extension "123". This is used to identify which program should open the file or what file type it is.
File extensions help you organize and manage files. They provide a quick and easy way to identify and associate the file type with the appropriate software.

We can help you open your file

In our database, we have collected a huge number of different file extensions, detailed descriptions, and programs that can be used to open or otherwise work with the file extensions listed in our database.
This database is an invaluable resource for users who want to understand better file extensions and what they can do with them. It also allows users to know different file types with the same purpose.

Only verified software links are provided

We have verified every software listed in our database. The software listed in our database includes links to the developer's or software's website. These links should allow you to download the right program for each file type. Using verified software from reputable sources helps minimize the risk of malware and viruses infecting your computer.