# Units ## Overview Vectary utilizes an internal measurement system that can be defined only when importing/exporting a file or configuring augmented reality settings. \
### Available units

Metric system	Imperial system
millimeters	thou
centimeters	inches
decimeters	feet
meters	yards
kilometers	miles

### File Import In the import settings menu, a preferred unit of measurement can be selected. Imported files will have their dimensions automatically converted according to the selected units. Once configured, this setting will be applied to all new projects by default, without the need for repeated selection.

### File Export When selecting a file format that supports unit information, an additional field for specifying units will appear. Note that OBJ and STL formats do not store real-world unit data.

### AR Export To set units for an AR model, navigate to the **Behavior** tab and select a preferred measurement unit.