#### 1.2.1.4. Units

The Units menu allows you to change the unit system of the active ACP model.

Figure : Units Menu

The unit system can only be altered in preprocessing, it is locked in shared mode and postprocessing. When changing from a predefined unit system to Undefined, or vice versa, no conversions take place.

The unit system of the active model is displayed in the status bar at the bottom of the ACP window.

Table 1.1: Predefined Unit Systems

Name | Length | Mass | Time | Length*Mass/Time2 | Temperature | Currency
--- | --- | --- | --- | --- | --- | ---
BFT | ft | slug | s | lbf | F | USD
BIN | in | 1/in*lbf/s2 | s | lbf | F | USD
CGS | cm | g | s | dyn | C | USD
MKS | m | kg | s | N | K | USD
MPA | mm | t | s | N | C | USD
SI | m | kg | s | N | K | USD
UMKS | μm | kg | s | μN | C | USD
Undefined | - | - | - | - | - | -

Release 18.2 - © ANSYS, Inc. All rights reserved.