← utilities

Chmod Calculator

Tick permissions or type octal. Copy a ready chmod command.

Permissions matrix
ReadWriteExecute
Owner
Group
Others
Special bits
Presets
chmod commands

chmod 755 filename

chmod u=rwx,g=rx,o=rx filename

Warning: 777 gives everyone full access — usually unsafe.

How to use it

  1. Tick read, write, and execute for owner, group, and others.
  2. Or type an octal number or a symbolic mode. Everything stays in sync.
  3. Tick setuid, setgid, or sticky if you need them.
  4. Tap Copy octal cmd or Copy symbolic cmd.

Common uses

Work out the right file permissions on a server. Read a mode like 755.

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