Convert chmod values between numeric and symbolic formats, inspect owner, group, and others permissions with a live interactive grid, compare two chmod values side-by-side, view an octal bit breakdown, and get risk indicators — plus a ready-to-use chmod command.
Enter a numeric chmod value, a symbolic value, or both if they match.
Owner, group, others breakdown with ready-to-use command preview.
Owner can read, write, and execute.
Group can read, write, and execute.
Others can read, write, and execute.
For demo-file.txt, the owner can read, write, and execute. Users in the group can read, write, and execute. Everyone else can read, write, and execute.
Type two chmod values to compare them side-by-side, bit by bit.
Last 5 chmod values you used.
chmod maps numeric values to owner, group, and others permissions.
Each digit represents permissions for owner, group, and others.
4 = read, 2 = write, 1 = execute.
755 becomes rwxr-xr-x.
A leading digit adds setuid (4), setgid (2), or sticky (1) — e.g. 4755, 1777.
Calculate permissions from a Linux umask value.
Need to calculate the resulting file and directory permissions from a Linux umask value?
Open umask Calculator