Chmod Calculator
Calculate Unix file permissions with an interactive checkbox grid. Convert between numeric and symbolic notation.
Calculate Unix file permissions with an interactive checkbox grid. Convert between numeric and symbolic notation.
Chmod 755 sets the file owner to have read, write, and execute permissions (7), while the group and others have read and execute permissions (5). This is the most common permission for executable scripts and public directories.
Enter the numeric value (e.g., 644) in the calculator and it will show the symbolic equivalent (e.g., rw-r--r--). Each digit represents permissions for owner, group, and others: 4=read, 2=write, 1=execute.
Chmod 644 (rw-r--r--) is typically used for regular files — the owner can read and write, everyone else can only read. Chmod 755 (rwxr-xr-x) adds execute permission, which is needed for scripts and directories.