.HHI File Extension
The Sims 4 Household Data File
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What is an HHI file?
An HHI file is a data file used by The Sims 4, the 4th edition of the popular life simulation video game series. It stores game content about a household of one or more sims, which are people that the user controls.
You will most likely only encounter an HHI file if you are looking to modify game content for The Sims 4. The file is part of a set of files that contain various information about a sim household. A household with 1 sim consists of the following 5 files:
- 1 HHI file
- 1 HOUSEHOLDBINARY file
- 1 TRAYITEM file
- 2 SGI files (for every additional sim in the household there is another SGI file)
These files can be found in the Tray folder in the following directories:
- Windows XP - C:\Documents and Settings\[username]\My Documents\Electronic Arts\The Sims 4\
- Windows Vista, 7, 8, and 10 - C:\Users\[username]\Documents\Electronic Arts\The Sims 4\
- macOS - /Users/[username]/Documents/Electronic Arts/The Sims 4/
NOTE: You may also encounter HHI files when browsing files used by the Xbox One and PlayStation 4 versions of The Sims 4.
How do I open an HHI file?
To use an HHI file with The Sims 4, place it in the game's Tray folder along with the file's accompanying TRAYITEM, HOUSEHOLDBINARY, and SGI files. The content your files contains will then appear in the game.