You are allowed to input data and request output in almost all commonly used engineering unit systems including "meter - kilonewton - second" (MKS), International System of Units (SI), and "feet - pound - second" (FPS). In the input file, you may change units as many times as required. Mixing and matching between length and force units from different unit systems is also allowed.

The input unit for angles (or rotations) is degrees. However, in JOINT DISPLACEMENT output, the rotations are provided in radians.

For all output, the units are clearly specified by the program.