When you submit a Jaguar job, two files are generated: the log and out files (denoted by the appropriate suffix).

The log file is basically a compressed version of the out file that allows you at a glance to see if your job is running fine. Once your job is completed, the most useful number is the last energy number. That is the final energy of your calculation in units of hartrees. Note that 1 hartree = 627.5096 kcal/mol

The out file contains a wealth of useful information. If your job runs correctly and finishes with no problems, go to the end of the file. Among other things you will find