A new method (VHR method) has been derived from Johnson-Mehl-Avrami (JMA) transformation rate equation to calculate the crystallization kinetic parameters of a glassy system. These parameters include the activation energy of crystallization E (kJ/mol), the kinetic exponent n and the frequency factor Ko (s-1). The VHR method starts with obtaining E. Let us consider xi(t) as the volume fractions of crystallization which are obtained at various heating rates βi (K/min). The method for obtaining E depends on finding the temperatures Ti (K) and the times ti (s) which are required to produce the same values of xi(t) at various values of βi. Next, the value of n is obtained by using the temperatures T1 (K) and T2 (K) and the times t1 (s) and t2 (s) which are extracted at two different values of the volume fraction x1(t) and x2(t) at the same heating rate. Finally, the value of Ko may be obtained at any value of x(t) after obtaining the values of E and n, successively. The applicability and the full descriptions of the VHR method have been thoroughly tested on computer simulated crystallization curves. Also,the validity ofthe VHR method has been checked in the cases of n being temperature-independent and temperature-dependent parameter. The VHR technique has been used to estimate the crystallization parameters of Se75.5Te20Sb4.5 chalcogenide glass under non-isothermal conditions.