Home : File Types : XLL File

.XLL File Extension

NEW! Open any file with File Viewer Lite.

File TypeExcel Add-In File

3.0 (2 Votes) Thanks for voting!
Rare Uncommon Average Common Very Common
CategoryPlugin Files


This file is saved in a binary format, which requires a specific program to read its contents.


Contains extra functions, templates, or other tools that enhance the capabilities of Microsoft Excel; similar to a standard .DLL file (Dynamic Link Library), but is specifically written for MS Excel.

Program(s) that open .XLL files
Microsoft Windows LogoWindows
Microsoft Excel 2016
Mac OS X LogoMac
Microsoft Excel 2016
Updated 2/16/2007