The Units package contains commands for unit conversion and provides environments for performing calculations with units.

Using Units and Dimensions in Maple Documents provides an overview of using units and dimensions including how to:

Distinguish between environments

Perform conversions

Perform computations with units

Control the default system of units

Add new systems of units

There is also an introductory tutorial on units and tolerances in the Maple Portal.  To access this tutorial, see Units Tutorial.

To perform quick unit conversions, use the Units Converter point-and-click interface.

The Units package contains commands to customize the quantities available. These commands manage the set of dimensions, units, and systems of units available and are listed below, under List of Units Package Commands.

For additional information about the Units package, see the Details and Index pages or one of the following four worksheets that introduce the use of units in the various Maple environments:

By default, loading the Units package enables the Simple Units Environment.

The following is a list of available commands for creating and managing systems, units, and dimensions.

For information on these commands, see the Units Package Commands page.

To display the help page for a particular Units package command, click the corresponding hyperlink.

$\mathrm{convert}\left(4.532\,'\mathrm{units}'\,\frac{'N'}{{'m'}^2}\,\frac{'\mathrm{lb}''\mathrm{ft}'}{{'s'}^2{'\mathrm{ft}'}^2}\right)$

$3.045363395$

$\mathrm{convert}\left(0\,'\mathrm{units}'\,'\mathrm{degC}'\,'\mathrm{degF}'\right)$

$0$

$\mathrm{convert}\left(0\,'\mathrm{temperature}'\,'\mathrm{degC}'\,'\mathrm{degF}'\right)$

$32$

To enter a unit in 2-D Math input, select the unit from the appropriate Units palette. If the unit you want is not there, select $\mathrm{unit}$ and then enter the unit.

When you edit a unit, double brackets appear around it.

$\mathrm{with}\left(\mathrm{Units}\right)\:$

Automatically loading the Units[Simple] subpackage

$\mathrm{UsingSystem}\left(\right)$

$\mathrm{SI}$

$\mathrm{distance}≔3.53\mathrm{Unit}\left('\mathrm{ft}'\right)+4.1\mathrm{Unit}\left('m'\right)$

$\mathrm{distance}≔5.175944000⟦m⟧$

$\mathrm{GetSystems}\left(\right)$

$\mathrm{Atomic},\mathrm{CGS},\mathrm{EMU},\mathrm{ESU},\mathrm{FPS},\mathrm{IPS},\mathrm{MKS},\mathrm{MTS},\mathrm{SI}$

$\mathrm{UseSystem}\left('\mathrm{FPS}'\right)$

$\mathrm{distance}≔3.53\mathrm{Unit}\left('\mathrm{ft}'\right)+4.1\mathrm{Unit}\left('m'\right)$

$\mathrm{distance}≔16.98144357⟦\mathrm{ft}⟧$

The Units package was updated in Maple 2018.