# Preparing input files using CHARM GUI

**URL:** <https://gromacs.bioexcel.eu/t/preparing-input-files-using-charm-gui/7040>\
**Category:** User discussions\
**Tags:** mdp-parameters\
**Created:** [August 18, 2023, 2:28pm UTC](https://gromacs.bioexcel.eu/t/preparing-input-files-using-charm-gui/7040 "2023-08-18T14:28:32Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Gulshan](https://avatars.discourse-cdn.com/v4/letter/g/bb73d2/32.png) [@Gulshan](https://gromacs.bioexcel.eu/u/Gulshan)\
**Post date:** [August 18, 2023, 2:28pm UTC](https://gromacs.bioexcel.eu/t/preparing-input-files-using-charm-gui/7040/1 "2023-08-18T14:28:32Z")

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GROMACS version:  
GROMACS modification: Yes/No  
I want to use CHARM GUI for making input files for simulations using Gromacs. So which version of gromacs should I use so that inputs are compatible?  
Regards