# How to use grdecl or zmap grid / or how to convert them to msh or vtu

**URL:** <https://discourse.opengeosys.org/t/how-to-use-grdecl-or-zmap-grid-or-how-to-convert-them-to-msh-or-vtu/1268>\
**Category:** Help & Support\
**Tags:** ogs6\
**Created:** [August 10, 2023, 10:16am UTC](https://discourse.opengeosys.org/t/how-to-use-grdecl-or-zmap-grid-or-how-to-convert-them-to-msh-or-vtu/1268 "2023-08-10T10:16:45Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![BarroisA](https://discourse.opengeosys.org/letter_avatar_proxy/v4/letter/b/b5ac83/32.png) [@BarroisA](https://discourse.opengeosys.org/u/BarroisA)\
**Post date:** [August 10, 2023, 10:16am UTC](https://discourse.opengeosys.org/t/how-to-use-grdecl-or-zmap-grid-or-how-to-convert-them-to-msh-or-vtu/1268/1 "2023-08-10T10:16:45Z")

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Hello,

I am used to work with grdecl grids or Zmap grids.  
After some research I have found a python exec “eclipsegrdecl2vtu” but the results is different compared to my original grid.  
Can you give me some advice about how to use grdecl or zmap grid ?

Thank you in advance

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**Author:** ![bilke](https://discourse.opengeosys.org/user_avatar/discourse.opengeosys.org/bilke/32/868_2.png) [@bilke](https://discourse.opengeosys.org/u/bilke)\
**Post date:** [August 16, 2023, 9:12am UTC](https://discourse.opengeosys.org/t/how-to-use-grdecl-or-zmap-grid-or-how-to-convert-them-to-msh-or-vtu/1268/2 "2023-08-16T09:12:24Z")

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There is no ogs tool with the name `eclipsegrdecl2vtu` so I am afraid we cannot help with this particular issue.