A generalized equation was derived to calculate the melting temperatures of homopolymers and copolymers. The Gibbs-Thomson equation for homopolymers and a modified application to copolymers were derived using the proposed equation. The melting temperature T-m(0) in the Flory equation corresponds to the melting temperature T-m(C,infinity) of copolymer crystals with stems of infinite length. Also, T-m(C,n*), the melting temperature for copolymer crystals with, stems containing the maximum possible number of structural, units, n*, should be used instead of T-m(0) as the basis of supercooling in crystallization. The proposed equation shows good agreement with experimental data for alpha-alkene-ethylene homogeneous copolymers.