Chmod Calculator
Interactive Unix chmod permissions calculator. Check read, write, and execute permissions to calculate octal numbers and symbolic commands instantly.
Permissions Matrix
Owner / User
Group
Public / Others
Outputs
Octal Value
755
Symbolic Representation
-rwxr-xr-x
Command String
chmod 755 file.txt
Frequently Asked Questions
What is chmod?
Chmod (change mode) is a Unix command used to set file and directory access permissions. It can be represented in octal notation (e.g., 755) or symbolic notation (e.g., rwxr-xr-x).
What do the owner, group, and public categories represent?
Owner (User) is the file creator. Group refers to users belonging to the file's assigned group. Public (Others) represents all other users on the system.