The HasDimension(dim) function tests whether the given dimension is in the Unit Converter.

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

$\mathrm{HasDimension}\left(\frac{'\mathrm{length}'}{'\mathrm{time}'}\right)$

$\mathrm{true}$

$\mathrm{HasDimension}\left(\frac{'\mathrm{length}''\mathrm{mass}'}{'\mathrm{time}'}\right)$

$\mathrm{true}$