  We present a complete numerical calculation and an experimental data analysis
of the universal conductance fluctuations in quasi-one-dimension nanowires. The
conductance peak density model, introduced in nanodevice research on [Phys.
Rev. Lett. 107, 176807 (2011)], is applied successfully to obtain the coherence
length of InAs nanowire magnetoconductance and we prove its equivalence with
correlation methods. We show the efficiency of the method and therefore a
prominent alternative to obtain the phase-coherence length. The peak density
model can be similarly applied to spintronic setups, graphene and topological
isolator where phase-coherence length is a relevant experimental parameter.
