chmod Calculator
Convert Unix file permissions between octal (755), symbolic (rwxr-xr-x), and checkboxes. Includes special bits and common presets.
Processed locally in your browser — nothing is uploaded.
Command
chmod 755 file
- Owner: read, write, execute
- Group: read, execute
- Others: read, execute
About chmod Calculator
Unix permissions come in three notations: octal (755), symbolic (rwxr-xr-x), and the chmod command itself. Toggle checkboxes or type either notation and the others update instantly, including setuid, setgid, and the sticky bit.
Common uses
- Figure out what chmod 644 actually grants
- Build the right mode for a deploy script or Dockerfile
- Understand ls -l output like drwxr-sr-x
Example
Input
755
Output
rwxr-xr-x — owner: read/write/execute · group: read/execute · others: read/execute