Units of Conductance
1 V is equivalent to 1 joule per coulomb (meaning, it takes 1 J of energy to move 1 C of charge across a potential difference of 1 V).

1 J is \$1\ \rm kg\ m^2\ s^{-2}\$.

1 C is \$1\ \rm A\cdot s\$.

So 1 V is \$ 1\rm\ kg\ m^2\ s^{-3}\ A^{-1}\$