Chmod Calculator
Calculate Unix file permissions in octal, symbolic, and command format with an interactive grid
chmod 755 <file>Common Permission Modes
Chmod Calculator — Unix File Permissions
Calculate Unix/Linux file permissions in octal (e.g. 755), symbolic (rwxr-xr-x), and chmod command format. Toggle checkboxes for owner, group, and other permissions.
Common chmod values
chmod 755
Owner: read/write/execute. Group + Others: read/execute. Standard for web directories.
chmod 644
Owner: read/write. Group + Others: read-only. Standard for web files.
chmod 777
Everyone: read/write/execute. Avoid in production — too permissive.
chmod 600
Owner: read/write only. Group + Others: no access. For private keys and secrets.
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