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Units (form)

Applies To: Microsoft Dynamics AX 2012 R3, Microsoft Dynamics AX 2012 R2, Microsoft Dynamics AX 2012 Feature Pack, Microsoft Dynamics AX 2012

Click Organization administration > Setup > Units > Units.

Use this form to create units of measure. A unit of measure is a standard base or derived division of quantity used for measurement or exchange. When, for example, you enter an order in Microsoft Dynamics AX, you specify a quantity and the unit of measure that the quantity represents.

The following tables provide descriptions for the controls in this form.




Unit conversions

Create conversion factors for general use or for specific products for the current unit.

Translated unit descriptions

Create language-specific descriptions for the unit of measure.

Unit texts

Create unit texts for external documents in customer- or vendor-specific languages.

External codes

View or maintain external codes for fields that are used to send and receive documents electronically through Microsoft Dynamics AX Application Integration Framework (AIF).

Unit creation wizard

Activate the Unit creation wizard to help you create different standard units and conversions.


In new installations of Microsoft Dynamics AX, the standard units and conversions are created automatically.





Identification of the unit of measure.


Descriptive name of the unit of measure specified in the system language.

Fixed unit assignment

If this check box is selected, you can identify the unit of measure as one of the fixed units of measure that are listed in the Fixed unit field.

Fixed unit

The fixed unit association is used to identify a specific unit of measure. By using this association, specific units of measure can be identified by the business logic in Microsoft Dynamics AX and conversions between the units of measure can be completed.

Unit class

The classification for the unit of measure.

The unit class represents a logical grouping of units of measure such as area, mass, or quantity.

System of units

The metric system of the unit of measure. Units of measure in the same unit class such as liters and gallon can belong to different metric systems. You can choose one of the following:

  • None: Units of measure that do not belong to the metric or the US typical system of units.


    Examples of units of measure that use the None category are Box and Pieces.

  • Metric units: The international system of measurement.

  • United States customary units: The most commonly used system of measurement in the United States.

Decimal precision

The number of decimals that the converted unit of measure is rounded to when a calculation is completed for the unit of measure.

Base unit

If this check box is selected, the unit of measure is defined as the base unit within the unit’s unit class. The base unit helps streamline the conversion setup for a unit of measure. When a base unit is defined within a unit class, the number of conversion rules between units of measure in the class can be limited.

Say that you have a conversion rule that enables conversion from milliliters to liters and another conversion rule that enables conversion from liters to gallons. If you have specified liters as the base unit in the Liquid volume unit class, you can convert from gallons to milliliters without a conversion rule between these two units.

System unit

Unit of measure that is applied when a measurement or quantity is entered in fields in Microsoft Dynamics AX that are not associated with a specific unit of measure.

Say that you have a company where kg is set as the system unit. In this company, any weight measurement in the Mass unit class, such as net weight, that is entered for an inventory item is identified as kg

Announcements: To see known issues and recent fixes, use Issue search in Microsoft Dynamics Lifecycle Services (LCS).