mpc(q; base=u"Mpc")

Convert q to Mpc units based on the units specified by base. If base is unspecified, mpc will default to Mpc. You could choose some other length unit if you wanted.

planck(q)

Strip units by inserting whatever ħ, c, G and kb are required to make the conversion work.

unmpc(targetUnit, q)

Convert a quantity q to units specified by targetUnits automatically inserting whatever factors of ħ, c, ϵ₀ and kb are required to make the conversion work.

unplanck(targetUnit, q)

Convert a quantity q to units specified by targetUnits automatically inserting whatever factors of ħ, c, G and kb are required to make the conversion work.