# How to calculate pressure for individual components in the system

**URL:** <https://gromacs.bioexcel.eu/t/how-to-calculate-pressure-for-individual-components-in-the-system/3457>\
**Category:** User discussions\
**Created:** [January 10, 2022, 5:24pm UTC](https://gromacs.bioexcel.eu/t/how-to-calculate-pressure-for-individual-components-in-the-system/3457 "2022-01-10T17:24:19Z")\
**Posts on this page:** 1\
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**Author:** ![mulpurinagaraju](https://avatars.discourse-cdn.com/v4/letter/m/8e7dd6/32.png) [@mulpurinagaraju](https://gromacs.bioexcel.eu/u/mulpurinagaraju)\
**Post date:** [January 10, 2022, 5:24pm UTC](https://gromacs.bioexcel.eu/t/how-to-calculate-pressure-for-individual-components-in-the-system/3457/1 "2022-01-10T17:24:19Z")

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GROMACS version:2018.1  
GROMACS modification: Yes/No  
Dear GROMACS users,  
The system has two graphene sheets and water molecules between them. I want to calculate the pressure of only water molecules in X, Y, and Z directions, not whole system pressure.  
Any help is appreciated.  
Thank you very much.  
Best Regards,  
Raju