Chmod Calculator
Turn file permissions into octal and symbolic notation.
Permissions
read
write
exec
owner
group
other
Octal
755
Symbolic
rwxr-xr-x
Command
chmod 755 file
Free online chmod calculator. Tick read, write and execute for owner, group and other to get the octal (like 755) and symbolic (rwxr-xr-x) permissions — or type an octal value to see the boxes update. Runs in your browser.
How to use the Chmod Calculator
- 01Tick read, write and execute for owner, group and other.
- 02The octal (e.g. 755) and symbolic (rwxr-xr-x) forms update instantly.
- 03Or type an octal value to set the checkboxes and copy the chmod command.
Frequently asked questions
What does chmod 755 mean?
755 gives the owner read, write and execute (7), and the group and others read and execute (5). It is a common setting for directories and executable scripts.
What is the difference between octal and symbolic notation?
Octal packs each permission set into a single digit 0–7, while symbolic spells it out as rwx characters. Both describe the same permissions; this tool shows them side by side.