I came across a quick, painless, flexible and FREE program that calculates MKT using the formula published in USP 27. This free 2 MB zip file, compliments of ScienTek Software, is provided as "a community service to the pharmaceutical industry worldwide". The program is self-documented with complete validation information for meeting compliance requirements of 21 CFR part 11. 

USP's Activation Energy value of 83.144 kJ/mole is provided as a default but if you can justify a different value, the program gives you the flexibility to recalculate. This latest version (1.2) also allows for the unit preference of kilojoules or kilocalories.

The MKT.exe is developed using Microsoft Visual Basic 6 (SP5) and requires a 32-bit Windows platform to install and execute. 

To learn more click here. To download and unzip the file directly, click here.