Chmod Calculator

Calculate Unix file permissions in octal and symbolic notation.

Runs entirely in your browser
Read
Write
Execute
Owner
Group
Others
Octal
000
Symbolic
---------
Command
chmod 000 filename

How it works

Calculate file permissions visually.

1

Toggle permissions

Check or uncheck read, write, and execute for each user class.

2

See all formats

Octal, symbolic, and the chmod command update in real time.

3

Copy the result

Copy the octal value, symbolic notation, or the full command.

Why use KepTools Chmod Calculator?

Real-time updates

All formats update instantly as you toggle checkboxes or type octal values.

Bidirectional

Enter octal values to update checkboxes, or toggle checkboxes to see the octal.

Ready-to-use command

Get the full chmod command you can paste directly into your terminal.

No account needed

Just open the page and start calculating. No sign-ups or logins.