Chmod Calculator

Calculate Linux/Unix file permissions. Toggle checkboxes or enter numeric/symbolic notation.

Permission Matrix

Read (4) Write (2) Execute (1)
Owner
Group
Others
Presets:

Numeric (Octal)

Symbolic

Command

chmod 000 filename

Permission Values

4 = Read (r)
2 = Write (w)
1 = Execute (x)
0 = No permission

Add values for combined permissions: 7 = 4+2+1 = rwx