Binding energies are often measured experimentally in kcal per mole, and then the binding energy in eV

Question:

Binding energies are often measured experimentally in kcal per mole, and then the binding energy in eV per molecule is calculated from that result. What is the conversion factor in going from kcal per mole to eV per molecule? What is the binding energy of KCI (= 4.43eV) in kcal per mole?