  We describe a numerical calculation tool H-COUP written in Fortran, which
provides one-loop electroweak corrected vertices for the discovered Higgs boson
$h(125)$ in various Higgs sectors. The renormalization is based on the improved
on-shell scheme without gauge dependence. In the first version H-COUP_1.0, the
following models are included, namely, the Higgs singlet model, four types
(Type-I, Type-II, Type-X, Type-Y) of two Higgs doublet models with a
softly-broken $Z_2$ symmetry and the inert doublet model. We first briefly
introduce these models and then explain how to install and run this tool in an
individual machine. A sample of numerical outputs is provided for user
information.
