← Back to tools
Chmod Calculator
Calculate Unix file permissions. Toggle checkboxes or enter an octal code — results update instantly.
| Role | Read | Write | Execute | Value |
|---|---|---|---|---|
| Owner | 6 | |||
| Group | 4 | |||
| Others | 4 |
Octal
644
Symbolic
-rw-r--r--
chmod command
chmod 644 filename
Description
Owner: read, write | Group: read | Others: read
Common Presets
About Unix File Permissions
- Each digit represents permissions for owner, group, and others.
- Read (
4) + Write (2) + Execute (1) = octal digit. - Example:
755= owner rwx, group rx, others rx. - Everything runs in your browser — no data is sent over the network.