chmod Calculator

Calculate Unix file permissions, octal values, and generate chmod commands.

Common Presets

Permissions

Special Bits

Octal value

Symbolicrwxr-xr-x

Filename (optional)

chmod 755 file.sh

Quick Reference

644Regular file (rw-r--r--)

755Script / directory (rwxr-xr-x)

777World-writable (rwxrwxrwx)

600Private file (rw-------)

400Read-only (r--------)

700Private executable (rwx------)

664Group writable (rw-rw-r--)

750Private to group (rwxr-x---)

Special bits: s = setuid/setgid with exec, S = setuid/setgid without exec, t = sticky bit with exec, T = sticky without exec

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