Translations:Manual:What is FreeCAD/2/en

FreeCAD is an open source parametric 3D modeling application, made primarily to design real-life objects. Parametric modeling describes a particular type of modeling where the shapes of the 3D objects you design are controlled by parameters. For example, the shape of a brick might be controlled by three parameters: height, width and length. In FreeCAD, as in other parametric modelers, these parameters are part of the object and continue to be modifiable at any time, even after the object has been created. Some objects can have other objects as parameters; for example, you could have an object that takes your brick as input and creates a column from it. You could think of a parametric object as a small program that creates geometry from parameters.