Developer Tool
Chmod Calculator
Interactive Unix file permissions calculator. Toggle checkboxes, type octal or symbolic notation, and get instant chmod commands.
Octal
0755
Symbolic
rwxr-xr-x
Visual
Standard Permissions
Read (4)
Write (2)
Execute (1)
Owner
Group
Other
Special Permissions
Command Preview
$ chmod 0755 filename
Octal Input
Type 3 or 4 digits (e.g. 755 or 0755)
Symbolic Input
e.g. u+rwx,g+rx,o+rx or a+r
Context
Owner can read, write, and execute. Group can read and execute. Others can read and execute.
Common Presets
755 - Standard executable / directory
Owner: full access. Group & Others: read and execute.
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