Other Calculators

Chmod Permissions Calculator

Convert a Unix/Linux chmod octal permission code (like 755) into its readable rwx permission string.

Symbolic permissions —

Owner —

Group —

Others —

About the Chmod Permissions Calculator

Unix and Linux file permissions are often set using a 3-digit octal code, one digit for the file owner, one for the group and one for everyone else. Each digit is a sum of read (4), write (2) and execute (1) permissions.

How it works: Each octal digit (0-7) is broken back down into its read, write and execute bits to build the familiar rwx-style permission string used by commands like ls -l.

For example, 755 means the owner has full read/write/execute access while group and others can only read and execute — a common setting for executable scripts and directories.