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Chmod Calculator

Linux & Unix file permission calculator — symbolic, octal & binary

File Permissions

OR Use checkboxes below ↓
Special Bits
Standard Permissions
Owner (u)
r
w
x
Group (g)
r
w
x
Other (o)
r
w
x
----------
000
----------
000 000 000
chmod 000 file

How to Use

1
Check the boxes to set permissions for Owner, Group, and Other, or type an octal value (like 755) directly in the input field.
2
Enable SetUID, SetGID, or Sticky Bit for special permissions. These add a leading digit (e.g. 4755).
3
The symbolic notation, binary, and ready-to-use chmod command update instantly.
4
Click Copy Command to copy the chmod command, or click any example on the right to load it instantly.
Ctrl+L to reset  ·  Ctrl+C while focused to copy command

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