User Tools

Site Tools


arma:terrain:grid_cell_size

Terrain Grid and Cell Sizes

Terrain grid and cell sizes explained by Snake Man, PMC.

If you do not know how large your terrain is, or someone is reporting on the forums that he made this and that sized terrain, here is the table to once and for all explain to you how big (or small) is a terrain of certain specification. Do not use other kilometer designation than “VALUE km x VALUE km” or simply “VALUEkm”.

Grid size is the important factor as OFP/ArmA (and so far that we've heard ArmA 2 also) engines only handle power of two grid sizes.

Grid size Cell size km x km
4096 50 204.8
4096 40 163.8
4096 30 122.8
4096 20 81.9
4096 10 40.9
4096 8 32.7
4096 6 24.5
4096 4 16.3
Grid size Cell size km x km
2048 50 102.4
2048 40 81.9
2048 30 61.4
2048 20 40.9
2048 10 20.4
2048 8 16.3
2048 6 12.2
2048 4 8.1
Grid size Cell size km x km
1024 50 51.2
1024 40 40.9
1024 30 30.7
1024 20 20.4
1024 10 10.2
1024 8 8.1
1024 6 6.1
1024 4 4
Grid size Cell size km x km
512 50 25.6
512 40 20.4
512 30 15.3
512 20 10.2
512 10 5.1
512 8 4
512 6 3
512 4 2
Grid size Cell size km x km
256 50 12.8
256 40 10.2
256 30 7.6
256 20 5.1
256 10 2.5
256 8 2
256 6 1.5
256 4 1

And so far I've never seen anybody do smaller than 256 grid size terrains, but maybe at this point you can already calculate yourself how small those terrains would be.

All BIS made terrains were as follows:

Name Grid size Cell size km x km
OFP islands 256 50 12.8

ArmA and ArmA 2 terrain information has been disabled now as the info we get from WRP doesn't compare with what we have ingame. For example ingame Chernarus is 15.3km x 15.3km in size, however the WRP says grid 2048 and cell 30m… Stay tuned :)

See also arma3 terrain grid cell size.

arma/terrain/grid_cell_size.txt · Last modified: 2021-09-03 11:04 by snakeman