# Remove PBC

**URL:** <https://gromacs.bioexcel.eu/t/remove-pbc/2857>\
**Category:** User discussions\
**Tags:** pbc, gmx-trjconv\
**Created:** [September 22, 2021, 8:41am UTC](https://gromacs.bioexcel.eu/t/remove-pbc/2857 "2021-09-22T08:41:29Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![naresh](https://avatars.discourse-cdn.com/v4/letter/n/c68b51/32.png) [@naresh](https://gromacs.bioexcel.eu/u/naresh)\
**Post date:** [September 22, 2021, 8:41am UTC](https://gromacs.bioexcel.eu/t/remove-pbc/2857/1 "2021-09-22T08:41:29Z")

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GROMACS version:2020.5  
GROMACS modification: Yes/No  
Here post your question  
I am trying to remove pbc from trajectory files. I have tried several options discussed in gromacs forum. But not able to remove pbc. Please suggest me step to step procedure to remove pbc.

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**Author:** ![alevilla](https://dub1.discourse-cdn.com/flex017/user_avatar/gromacs.bioexcel.eu/alevilla/32/439_2.png) [@alevilla](https://gromacs.bioexcel.eu/u/alevilla)\
**Post date:** [September 27, 2021, 9:16am UTC](https://gromacs.bioexcel.eu/t/remove-pbc/2857/2 "2021-09-27T09:16:11Z")

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Hi,  
Here you can find a workflow to fix periodicity effects [Terminology — GROMACS 2021.3 documentation](https://manual.gromacs.org/current/user-guide/terminology.html#suggested-workflow)

Here some post in the forum that may help (maybe you saw them already or maybe not)  
[https://gromacs.bioexcel.eu/tag/gmx-trjconv](https://gromacs.bioexcel.eu/tag/gmx-trjconv)

I hope it helps  
Alessandra