.ESM File

The esm file extension is mainly associated with various computer games developed by Bethesda Softworks game studio.

ESM is an data format found in some Bethesda games and contains settings which control many internal functions within the game, such as run speed, jump height, how much skills affect damage, how easy it is to sneak, how condition affects weapons, and many other neat things.

Files with esm file extension can commonly be found in games from Bethesda, such as The Elder Scrolls or Fallout series. These are settings files for various functions in the games.

How to open:

These files are usually not opened directly, but saved by the game when user changes settings.

How to convert:

There is no point in conversion of .esm file type but perhaps you could simply edit it using any text editor.