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The convert(u, unit_free) function returns the unit-free component of u. If u is of type unit, then $1$ is returned.

The convert(u, unit_free, unit) function returns the unit-free component of u and assigns the unit component of u to unit. If u is of type unit, then $1$ is returned. If u is unit-free, then $1$ is assigned to unit.

The term unit-free describes a scalar quantity with no (multiplicative) unit attached to it. Conversion to unit-free does not apply directly to any non-scalar Maple object or data structure, which may still have units embedded within it.

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.

$\mathrm{convert}\left(100.0\,\mathrm{unit\_free}\right)$

$100.0$

$\mathrm{convert}\left(234\,\mathrm{unit\_free}\,'\mathrm{unit1}'\right)$

$234$

$\mathrm{unit1}$

$1$

$\mathrm{expr}≔\mathrm{convert}\left(45\sin \left(x\right)\mathrm{Unit}\left(\mathrm{farad}\right)\,\mathrm{unit\_free}\,'\mathrm{unit2}'\right)$

$\mathrm{expr}≔45\sin \left(x\right)$

$\mathrm{unit2}$

$⟦F⟧$

$a≔\mathrm{expr}\mathrm{unit2}$

$a≔45\sin \left(x\right)⟦F⟧$

$M≔\mathrm{Vector}\left[\mathrm{row}\right]\left(\left[3\mathrm{Unit}\left(\mathrm{gram}\right)\,5\mathrm{Unit}\left(\mathrm{kilogram}\right)\right]\right)$

$M≔\left[\begin{array}{cc}3⟦g⟧& 5⟦\mathrm{kg}⟧\end{array}\right]$

$\mathrm{map}\left(\mathrm{convert}\,M\,\mathrm{unit\_free}\right)$

$\left[\begin{array}{cc}3& 5\end{array}\right]$

$t≔\mathrm{Int}\left(\sin \left(x\right)\mathrm{Unit}\left(\mathrm{meter}\right)\,x=1\mathrm{Unit}\left(s\right)..10\mathrm{Unit}\left(s\right)\right)$

$t≔{\int }_{⟦s⟧}^{10⟦s⟧}\sin \left(x\right)⟦m⟧\ⅆx$

$\mathrm{subsindets}\left(t\,\mathrm{with\_unit}\,z\mapsto \mathrm{convert}\left(z\,\mathrm{unit\_free}\right)\right)$

${\int }_1^{10}\sin \left(x\right)\ⅆx$

$\mathrm{subsindets}\left(t\,\mathrm{specfunc}\left(\mathrm{anything}\,\mathrm{Units}:-\mathrm{Unit}\right)\,1\right)$

${\int }_1^{10}\sin \left(x\right)\ⅆx$

$\mathrm{expr}≔\mathrm{Mrange}=\left[3\mathrm{Unit}\left(\mathrm{kg}\right)..5\mathrm{Unit}\left(g\right)\right]$

$\mathrm{expr}≔\mathrm{Mrange}=\left[3⟦\mathrm{kg}⟧..5⟦g⟧\right]$

$\mathrm{subsindets}\left(\mathrm{expr}\,\mathrm{with\_unit}\,z\mapsto \mathrm{convert}\left(\mathrm{combine}\left(z\,\mathrm{units}\right)\,\mathrm{unit\_free}\right)\right)$

$\mathrm{Mrange}=\left[3..\frac{1}{200}\right]$

$\mathrm{expr}≔\mathrm{Mrange}=\left[3\mathrm{Unit}\left(\mathrm{kg}\right)..5\mathrm{Unit}\left(\mathrm{lb}\right)\right]$

$\mathrm{expr}≔\mathrm{Mrange}=\left[3⟦\mathrm{kg}⟧..5⟦\mathrm{lb}⟧\right]$

$\mathrm{subsindets}\left(\mathrm{expr}\,\mathrm{with\_unit}\,z\mapsto \mathrm{convert}\left(\mathrm{convert}\left(z\,'\mathrm{system}'\,\mathrm{FPS}\right)\,\mathrm{unit\_free}\right)\right)$

$\mathrm{Mrange}=\left[\frac{300000000}{45359237}..5\right]$