.123DX File Extension

Learn about .123DX files and view a list of programs that open them.

123D Design models automatically assign connections between parts that give the model natural motions when moved.

NOTE: 123D Design has been discontinued.

123D Design models automatically assign connections between parts that give the model natural motions when moved.

NOTE: 123D Design has been discontinued.

To open a .123dx file, you need compatible software that supports this file format.