🔑

Chmod Calculator

Calculate Linux file permissions by toggling Read/Write/Execute checkboxes or entering an octal value directly. Fully bidirectional.

Works in BrowserInstant
🔑 Permission Checkboxes
Who Read (r)
+4
Write (w)
+2
Execute (x)
+1
Octal Symbolic
👤 Owner 7 rwx
👥 Group 5 r-x
🌍 Others 5 r-x
Or enter octal directly
Octal Permission
755
rwxr-xr-x
chmod 755 filename
7
Owner
5
Group
5
Others
Common Presets
755
rwxr-xr-x
Directories, executables
644
rw-r--r--
Regular files
600
rw-------
Private files (SSH key)
777
rwxrwxrwx
Full access (not recommended)
400
r--------
Read-only owner