Creo Simulate > Getting Started with Creo Simulate > Configuration File Options > About Unit Settings Option
About Unit Settings Option
Use this option to control the default units setting for your model.
Customizes your units settings by controlling the default principal system of units for your model.
length = in
mass = lbm
time = sec
temperature = F
In this system, the unit of force is in x lbm/sec (inch lbm second), which is not a common unit.
MKS: meter kilogram second
CGS: centimeter gram second
mmNs: millimeter Newton second
FPS: foot pound second
IPS: inch pound second