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Chmod Calculator

Calculate Linux file permissions online. Click owner/group/other checkboxes including SUID, SGID, and sticky bit to get octal (e.g. 755) and symbolic (rwxr-xr-x) notation, or paste octal to reverse.

Click permissions

rwxownergroupother

Octal

0755

Symbolic

rwxr-xr-x

Command

chmod 0755

Reverse: octal → checkboxes

How to use

  1. Paste input or drop a file above.
  2. Adjust options (delimiter, dialect, quality, ratio).
  3. Copy result or download — no sign-up needed.

FAQ

What do 755 and 644 mean?

755 = rwxr-xr-x (executable, typical for scripts/dirs). 644 = rw-r--r-- (typical for files).

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