# SASA Calculation

**URL:** <https://gromacs.bioexcel.eu/t/sasa-calculation/13311>\
**Category:** User discussions\
**Tags:** gmx-sasa\
**Created:** [March 18, 2026, 10:37am UTC](https://gromacs.bioexcel.eu/t/sasa-calculation/13311 "2026-03-18T10:37:51Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![zeshan07](https://avatars.discourse-cdn.com/v4/letter/z/b5e925/32.png) [@zeshan07](https://gromacs.bioexcel.eu/u/zeshan07)\
**Post date:** [March 18, 2026, 10:37am UTC](https://gromacs.bioexcel.eu/t/sasa-calculation/13311/1 "2026-03-18T10:37:51Z")

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I have changed my probe from 0.14 to 0.186, but surprisingly the sasa have increased by a significant amount. What could be the possible reason?