# How can I extracting kinetic energy of a system **URL:** \ **Category:** User discussions\ **Created:** [February 29, 2024, 11:44am UTC](https://gromacs.bioexcel.eu/t/how-can-i-extracting-kinetic-energy-of-a-system/8472 "2024-02-29T11:44:26Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![mijiddorj](https://avatars.discourse-cdn.com/v4/letter/m/779978/32.png) [@mijiddorj](https://gromacs.bioexcel.eu/u/mijiddorj)\ **Post date:** [February 29, 2024, 11:44am UTC](https://gromacs.bioexcel.eu/t/how-can-i-extracting-kinetic-energy-of-a-system/8472/1 "2024-02-29T11:44:26Z")
GROMACS version: 2020.6 GROMACS modification: No Dear users, I have a simulation, and performed rerun for extracting energy terms. When I use gmx energy there are only few terms appear as follows: 1 Bond 2 Angle 3 U-B 4 Proper-Dih. 5 Improper-Dih. 6 LJ-14 7 Coulomb-14 8 LJ-(SR) 9 Disper.-corr. 10 Coulomb-(SR) 11 Coul.-recip. 12 Potential 13 Box-X 14 Box-Y 15 Box-Z 16 Volume 17 Density How can I get total energy of system? I could not find kinetic energy term? Is it need to use gmx traj for trr file? ---
**Author:** ![hess](https://dub1.discourse-cdn.com/flex017/user_avatar/gromacs.bioexcel.eu/hess/32/416_2.png) [@hess](https://gromacs.bioexcel.eu/u/hess)\ **Post date:** [March 4, 2024, 8:57am UTC](https://gromacs.bioexcel.eu/t/how-can-i-extracting-kinetic-energy-of-a-system/8472/2 "2024-03-04T08:57:02Z")
I guess this in an energy file from an energy minimization, not an MD simulation.