What is chmod Calculator?
File permissions on Unix/Linux are expressed in three groups —owner, group and others— with read (r), write (w) and execute (x) permissions. This calculator translates between those checkboxes, the octal value (for example 755) and the symbolic notation (rwxr-xr-x), and gives you the ready-to-copy chmod command.
Check the boxes and get the number instantly, or the other way around. It's the perfect reference when you can't remember which octal matches the permissions you need for a script, a web folder or an SSH key.
Frequently asked questions
Is it free?
Yes, all NewKit tools are completely free.
Is my data sent to a server?
No. Processing happens 100% in your browser, so it is safe even for sensitive data.